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443 lines
26 KiB
Markdown
---
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layout: docs
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title: Migrating to v5
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description: Track and review changes to the Bootstrap source files, documentation, and components to help you migrate from v4 to v5.
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group: migration
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aliases: "/migration/"
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toc: true
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---
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## v5.0.0-beta2
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### Sass
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- Extended the `.visually-hidden-focusable` helper to also work on containers, using `:focus-within`.
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### JavaScript
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- The default value for the `fallbackPlacements` is changed to `['top', 'right', 'bottom', 'left']` for better placement of popper elements.
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## v5.0.0-beta1
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### RTL
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**The RTL feature is still experimental and will probably evolve according to user feedback.** Spotted something or have an improvement to suggest? [Open an issue]({{< param repo >}}/issues/new), we'd love to get your insights.
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#### Sass
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Horizontal direction sensitive variables, utilities and mixins are renamed with more logical names — `start` and `end` in lieu of `left` and `right`.
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##### Components
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- Renamed `.dropleft` and `.dropright` to `.dropstart` and `dropend`.
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- Renamed `.dropdown-menu-*-left` and `.dropdown-menu-*-right` to `.dropdown-menu-*-start` and `.dropdown-menu-*-end`.
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- Renamed `.bs-popover-left` and `.bs-popover-right` to `.bs-popover-start` and `.bs-popover-end`.
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- Renamed `.bs-tooltip-left` and `.bs-tooltip-right` to `.bs-tooltip-start` and `.bs-tooltip-end`.
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- Renamed `.carousel-item-left` and `.carousel-item-right` to `.carousel-item-start` and `.carousel-item-end`.
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##### Utilities
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- Renamed `.left-*` and `.right-*` to `.start-*` and `.end-*`.
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- Renamed `.float-left` and `.float-right` to `.float-start` and `.float-end`.
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- Renamed `.border-left` and `.border-right` to `.border-start` and `.border-end`.
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- Renamed `.rounded-left` and `.rounded-right` to `.rounded-start` and `.rounded-end`.
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- Renamed `.ml-*` and `.mr-*` to `.ms-*` and `.me-*`.
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- Renamed `.pl-*` and `.pr-*` to `.ps-*` and `.pe-*`.
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- Renamed `.text-left` and `.text-right` to `.text-start` and `.text-end`.
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Breakpoints specific variants are consequently renamed too (eg. `.text-md-start` replaces `.text-md-left`).
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##### Mixins
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- Renamed `border-left-radius()` and `border-right-radius()` to `border-start-radius()` and `border-end-radius()` — as well as their corner relative variants (eg. `.border-bottom-left-radius` became `.border-bottom-start-radius`).
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- Renamed `caret-left()` and `caret-right()` to `caret-start()` and `caret-end()` — subsequently, the `caret()` mixin now takes `start` and `end` as arguments instead of `left` and `right`.
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##### Variables
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- New `$breadcrumb-divider-flipped` if a different breadcrumb separator is needed in RTL.
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- Renamed `$navbar-brand-margin-right` to `$navbar-brand-margin-end`.
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- Renamed `$pagination-margin-left` to `$pagination-margin-start`.
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- Renamed `$form-check-padding-left` to `$form-check-padding-start`.
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- Renamed `$form-switch-padding-left` to `$form-switch-padding-start`.
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- Renamed `$form-check-inline-margin-right` to `$form-check-inline-margin-end`.
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- Renamed `$form-select-feedback-icon-padding-right` to `$form-select-feedback-icon-padding-end`.
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### JavaScript
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- Data attributes for all JavaScript plugins are now namespaced to help distinguish Bootstrap functionality from third parties and your own code. For example, we use `data-bs-toggle` instead of `data-toggle`.
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- Updated Popper to v2.x:
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- Removed `offset` option from our Tooltip/Popover and Dropdown plugins; this can still be achieved using the `popperConfig` parameter.
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- The `fallbackPlacement` option has become `fallbackPlacements`.
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### Sass
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- Renamed `scale-color()` function to `shift-color()` to avoid collision with Sass's own color scaling function.
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### Utilities
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- Added new `.translate-middle-x` & `.translate-middle-y` utilities to horizontally or vertically center absolute/fixed positioned elements.
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### Components
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#### Breadcrumbs
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- Simplified the default appearance of breadcrumbs by removing `padding`, `background-color`, and `border-radius`.
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- Added new CSS custom property `--bs-breadcrumb-divider` for easy customization without needing to recompile CSS.
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#### Toasts
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- Toasts can now be [positioned]({{< docsref "/components/toasts#placement" >}}) in a `.toast-container` with the help of [positioning utilities]({{< docsref "/utilities/position" >}}).
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## v5.0.0-alpha3
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### Browser support
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- Dropped support for Microsoft Edge Legacy. See [here](#browser-support-1) for the previous browser support changes.
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### Sass
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- The color system which worked with `color-level()` and `$theme-color-interval` was removed in favor of a new color system. All `lighten()` and `darken()` functions in our codebase are replaced by `tint-color()` and `shade-color()`. These functions will mix the color with either white or black instead of changing its lightness by a fixed amount. The `scale-color()` (changed to `shift-color()` in Beta 1) will either tint or shade a color depending on whether its weight parameter is positive or negative. [See #30622](https://github.com/twbs/bootstrap/pull/30622) for more details.
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- Spinners now honor `prefers-reduced-motion: reduce` by slowing down animations. [See #31882](https://github.com/twbs/bootstrap/pull/31882).
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### Reboot
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- Introduce `$enable-smooth-scroll`, which applies `scroll-behavior: smooth` globally—except for users asking for reduced motion through `prefers-reduced-motion` media query. [See #31877](https://github.com/twbs/bootstrap/pull/31877)
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### Buttons
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- [Dropped `.btn-block` in favor of CSS grid utility classes.]({{< docsref "/components/buttons#block-buttons" >}}) Instead of applying `.btn-block` to individual buttons, a group of buttons now get wrapped in a parent `.d-grid` class and can use `.gap-*` utilities for spacing. For individual "block buttons", add `.w-100`.
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### Forms
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- The longstanding [Missing border radius on input group with validation feedback bug](https://github.com/twbs/bootstrap/issues/25110) is finally fixed by adding an additional `.has-validation` class to input groups with validation.
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- Promoted the Floating labels example to fully supported form component. [See the new Floating labels page.]({{< docsref "/forms/floating-labels" >}})
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- File inputs now use the `.form-control` class and don't require JavaScript, additional HTML, or additional classes. [See #31955](https://github.com/twbs/bootstrap/pull/31955).
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- Added `cursor:pointer` to `.form-control-color` color inputs.
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### Utilities
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- **Text utilities:**
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- Added `.fs-*` utilities for `font-size` utilities (with RFS enabled). These use the same scale as HTML's default headings (1-6, large to small), and can be modified via Sass map.
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- Renamed `.font-weight-*` utilities as `.fw-*` for brevity and consistency.
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- Renamed `.font-style-*` utilities as `.fst-*` for brevity and consistency.
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- Added `.d-grid` to display utilities
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- Added new `gap` utilities (`.gap`) for CSS Grid layouts
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## v5.0.0-alpha2
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### Sass
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- Added default parameters to each `border-radius` mixin. [See #31571](https://github.com/twbs/bootstrap/pull/31571).
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- Updated the next breakpoint when targeting only the `xs` breakpoint. [See #31500](https://github.com/twbs/bootstrap/pull/31500).
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- `box-shadow` mixins now allow `null` values and drop `none` from multiple arguments. [See #30394](https://github.com/twbs/bootstrap/pull/30394).
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### Docs
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- Renamed "Navs" page to "Navs & Tabs"
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- Renamed "Screen readers" helper page to "Visually hidden", and filename to `visually-hidden`
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- Renamed "Checks" page to "Checks & radios", and filename to `checks-radios`
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- Improved documentation of check/radio powered button groups
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- Improved skip links in our docs.
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- Redesigned docs navigation for larger tap targets on mobile and a streamlined subnav.
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- [#31114](https://github.com/twbs/bootstrap/pull/31114): Improved form documentation with regards to accessibility.
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### Layout
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- Container horizontal padding updated to match the gutter size of `.row`s.
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- [#31439](https://github.com/twbs/bootstrap/pull/31439): Removed `flex: 1 0 100%` from rows due to regressions in grid behavior.
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### Reboot
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- Updated `th` styling to use a default `null` value for `font-weight` and inherit `text-align` instead of setting explicitly.
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### Colors
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- Bumped color contrast ratio from 3:1 to 4.5:1.
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- Set `$black` as color contrast color instead of `$gray-900`.
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- Improved `$green` (and its theme alias `$success`) color to reach a new minimum color contrast (moving from `#28a745` to `#198754`).
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- Improved `$cyan` (and its theme alias `$info`) color to be more vibrant (moving from `#17a2b8` to `#0dcaf0`).
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### Forms
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- [#31383](https://github.com/twbs/bootstrap/pull/31383): Resized checks and radios to be `1em` instead of `1.25em` in an effort to make them scale better with custom `$font-size-base` values and more.
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### Components
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#### Badges
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- [#31132](https://github.com/twbs/bootstrap/pull/31132): Increased default padding for badges from `.25em`/`.5em` to `.35em`/`.65em`.
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#### Buttons
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- [#30639](https://github.com/twbs/bootstrap/pull/30639): Disabled states of buttons are easier to customize thanks to additional arguments in the `button-variant()` mixin.
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- [#30989](https://github.com/twbs/bootstrap/pull/30989): Updated buttons to ensure increased contrast on hover and active states.
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#### Carousel
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- Replaced chevron icons for carousel controls with new SVGs from [Bootstrap Icons]({{< param "icons" >}}).
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- Added new [`.carousel-dark` variant]({{< docsref "/components/carousel#dark-variant" >}}) for dark text, controls, and indicators (great for lighter backgrounds).
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#### Close button
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- Renamed `.close` to `.btn-close` for a less generic name.
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- Close buttons now use a `background-image` (embedded SVG) instead of a `×` in the HTML, allowing for easier customization without the need to touch your markup.
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- Added new variables to better control the customization.
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- Added new `.btn-close-white` variant that uses `filter: invert(1)` to enable higher contrast dismiss icons against darker backgrounds.
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#### Collapse
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- [#31346](https://github.com/twbs/bootstrap/pull/31346): Removed scroll anchoring for accordions.
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#### Dropdowns
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- Added new `.dropdown-menu-dark` variant and associated variables for on-demand dark dropdowns.
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- Added new variable for `$dropdown-padding-x`.
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- Darkened the dropdown divider for improved contrast.
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#### Navs
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- [#31035](https://github.com/twbs/bootstrap/pull/31035): Added new `null` variables for `font-size`, `font-weight`, `color`, and `:hover` `color` to the `.nav-link` class.
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#### Pagination
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- Added `transition`s to pagination links. [See #31396](https://github.com/twbs/bootstrap/pull/31396).
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#### Popovers
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- Renamed `whiteList` option to `allowList`.
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#### Toasts
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- [#31109](https://github.com/twbs/bootstrap/pull/31109): Made default toast duration 5 seconds.
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- [#31155](https://github.com/twbs/bootstrap/pull/31155): Clear `timeout` before showing toasts.
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- [#31381](https://github.com/twbs/bootstrap/pull/31381): Removed `overflow: hidden` from toasts and replaced with proper `border-radius`s with `calc()` functions.
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- Updated docs to include additional examples for how to customize and theme toasts.
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#### Tooltips
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- Renamed `whiteList` option to `allowList`.
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### Helpers
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- Responsive embed helpers have been renamed to [ratio helpers]({{< docsref "/helpers/ratio" >}}) with new class names and improved behaviors, as well as a helpful CSS variable.
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- Classes have been renamed to change `by` to `x` in the aspect ratio. For example, `.ratio-16by9` is now `.ratio-16x9`.
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- We've dropped the `.embed-responsive-item` and element group selector in favor of a simpler `.ratio > *` selector. No more class is needed, and the ratio helper now works with any HTML element.
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- The `$embed-responsive-aspect-ratios` Sass map has been renamed to `$aspect-ratios` and its values have been simplified to include the class name and the percentage as the `key: value` pair.
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- CSS variables are now generated and included for each value in the Sass map. Modify the `--aspect-ratio` variable on the `.ratio` to create any [custom aspect ratio]({{< docsref "/helpers/ratio#custom-ratios" >}}).
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- "Screen reader" classes are now ["visually hidden" classes]({{< docsref "/helpers/visually-hidden" >}}).
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- Changed the Sass file from `scss/helpers/_screenreaders.scss` to `scss/helpers/_visually-hidden.scss`
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- Renamed `.sr-only` and `.sr-only-focusable` to `.visually-hidden` and `.visually-hidden-focusable`
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- Renamed `sr-only()` and `sr-only-focusable()` mixins to `visually-hidden()` and `visually-hidden-focusable()`.
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### Utilities
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- [#31280](https://github.com/twbs/bootstrap/pull/31280): Added new [position utilities]({{< docsref "/utilities/position#arrange-elements" >}}) for `top`, `right`, `bottom`, and `left`. Values include `0`, `50%`, and `100%` for each property.
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- We also added new `translate` utilities to accompany those position utilities for centering elements when they're being positioned.
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- Some great examples have been added to the docs to show these off.
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- [#31484](https://github.com/twbs/bootstrap/pull/31484): Added new [`border-width` utility]({{< docsref "/utilities/borders#border-width" >}}).
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- [#31473](https://github.com/twbs/bootstrap/pull/31473): The `.d-none` utility was moved in our CSS to give it more weight over other display utilities.
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- Renamed `.text-monospace` to `.font-monospace`.
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- Removed `.text-hide` as it's an antiquated method for hiding text that shouldn't be used anymore.
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- New `line-height` utilities: `.lh-1`, `.lh-sm`, `.lh-base` and `.lh-lg`. See [here]({{< docsref "/utilities/text#line-height" >}}).
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---
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## v5.0.0-alpha1
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### Browser support
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See the browser and devices page for details on what is currently supported in Bootstrap 5. Since v4, here's what's changed to our browser support:
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- Dropped support for Internet Explorer 10 and 11
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- Dropped support for Microsoft Edge < 16
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- Dropped support for Firefox < 60
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- Dropped support for Safari < 10
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- Dropped support for iOS Safari < 10
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- Dropped support for Chrome < 60
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- Dropped support for Android < 6
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### Sass
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Changes to our source Sass files and compiled CSS.
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- Removed `hover`, `hover-focus`, `plain-hover-focus`, and `hover-focus-active` mixins. Use regular CSS syntax for these moving forward. [See #28267](https://github.com/twbs/bootstrap/pull/28267).
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- Remove previously deprecated mixins
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- `float()`
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- `form-control-mixin()`
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- `nav-divider()`
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- `retina-img()`
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- `text-hide()` (also dropped the associated utility class, `.text-hide`)
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- `visibility()`
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- `form-control-focus()`
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- Rearranged forms source files under `scss/forms/`. [See Forms section for more details.](#forms)
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- Removed print styles and `$enable-print-styles` variable. Print display classes, however, have remained intact. [See #28339](https://github.com/twbs/bootstrap/pull/28339).
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- Dropped `color()`, `theme-color()` & `gray()` functions in favor of variables. [See #29083](https://github.com/twbs/bootstrap/pull/29083)
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- The `theme-color-level()` function is renamed to `color-level()` and now accepts any color you want instead of only `$theme-color` colors. [See #29083](https://github.com/twbs/bootstrap/pull/29083) **Watch out:** `color-level()` was later on dropped in `v5.0.0-alpha3`.
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- `$enable-grid-classes` doesn't disable the generation of container classes anymore [See #29146](https://github.com/twbs/bootstrap/pull/29146)
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- Renamed `$enable-prefers-reduced-motion-media-query` and `$enable-pointer-cursor-for-buttons` to `$enable-reduced-motion` and `$enable-button-pointers` for brevity.
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- Line heights are dropped from several components to simplify our codebase. The `button-size()` and `pagination-size()` do not accept line height parameters anymore. [See #29271](https://github.com/twbs/bootstrap/pull/29271)
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- The `button-variant()` mixin now accepts 3 optional color parameters, for each button state, to override the color provided by `color-contrast()`. By default, these parameters will find which color provides more contrast against the button state's background color with `color-contrast()`.
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- The `button-outline-variant()` mixin now accepts an additional argument, `$active-color`, for setting the button's active state text color. By default, this parameter will find which color provides more contrast against the button's active background color with `color-contrast()`.
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- Ditch the Sass map merges, which makes it easier to remove redundant values. Keep in mind you now have to define all values in the Sass maps like `$theme-colors`. Check out how to deal with [Sass maps]({{< docsref "/customize/sass#maps-and-loops" >}}).
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- `color-yiq()` function and related variables are renamed to `color-contrast()` since it's not related to YIQ colorspace anymore. [See #30168.](https://github.com/twbs/bootstrap/pull/30168/)
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- `$yiq-contrasted-threshold` is renamed to `$min-contrast-ratio`.
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- `$yiq-text-dark` and `$yiq-text-light` are respectively renamed to `$color-contrast-dark` and `$color-contrast-light`.
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- Linear gradients are simplified when gradients are enabled and therefore, `gradient-bg()` now only accepts an optional `$color` parameter.
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- The `bg-gradient-variant()` mixin is removed since the `.bg-gradient` class can now be used to add gradients to elements instead of the `.bg-gradient-*` classes.
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- The `media-breakpoint-down()` uses the breakpoint itself instead of the next breakpoint. Use `media-breakpoint-down(lg)` instead of `media-breakpoint-down(md)` to target viewports smaller than the `lg` breakpoint.
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- The `media-breakpoint-between()` mixin's second parameter also uses the breakpoint itself instead of the next breakpoint. Use `media-between(sm, lg)` instead of `media-breakpoint-between(sm, md)` to target viewports between the `sm` and `lg` breakpoints.
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- The `box-shadow()` mixin now better supports `none` and `null` with multiple arguments. Now you can pass multiple arguments with either value and get the expected output. [See #30394](https://github.com/twbs/bootstrap/pull/30394).
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- Each `border-radius()` mixin now has a default value. You can now call these mixins without specifying a border radius value and the `$border-radius` variable will be used. [See #31571](https://github.com/twbs/bootstrap/pull/31571)
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### JavaScript
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Changes to our source and compiled JavaScript files.
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- Dropped jQuery dependency and rewrote plugins to be in regular JavaScript.
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- Removed underscore from public static methods like `_getInstance()` → `getInstance()`.
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### Color system
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We've updated the color system that powers Bootstrap to improve color contrast and provide a much more extensive set of colors.
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- Updated blue and pink base colors (`-500`) to ensure WCAG 2.1 AA contrast.
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- Added new tints and shades for every color, providing nine separate colors for each base color, as new Sass variables.
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- To support our color system, we've added new custom `tint-color()` and `shade-color()` functions to mix our colors appropriately.
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### Grid and layout
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Changes to any layout tools and our grid system.
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- Dropped the `.media` component as it can be built with utility classes. [See #28265](https://github.com/twbs/bootstrap/pull/28265).
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- Remove `position: relative` from grid columns.
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- The horizontal padding is added to the direct children in a row instead of the columns themselves.
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- This simplifies our codebase.
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- The column classes can now be used stand-alone. Whenever they are used outside a `.row`, horizontal padding won't be added.
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- The responsive gutter classes can be used to control the gutter width in horizontal, vertical or both directions.
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- The gutter width is now set in `rem` and decreased from `30px` to `1.5rem` (24px).
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- `bootstrap-grid.css` now only applies `box-sizing: border-box` to the column instead of resetting the global box-sizing. This way the grid system can be used, even if `box-sizing: border-box` is not applied to each element.
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### Content, Reboot, etc
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Changes to Reboot, typography, tables, and more.
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- [RFS]({{< docsref "/getting-started/rfs" >}}) enabled for automated font size rescaling. [See #29152](https://github.com/twbs/bootstrap/pull/29152)
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- Reset default horizontal `padding-left` on `<ul>` and `<ol>` elements from browser default `40px` to `2rem`.
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- Simplified table styles (no more odd top border) and tightened cell padding.
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- Nested tables do not inherit styles anymore.
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- `.thead-light` and `.thead-dark` are dropped in favor of the `.table-*` variant classes which can be used for all table elements (`thead`, `tbody`, `tfoot`, `tr`, `th` and `td`).
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- The `table-row-variant()` mixin is renamed to `table-variant()` and accepts only 2 parameters: `$color` (colon name) and `$value` (color code). The border color and accent colors are automatically calculated based on the table factor variables.
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- Split table cell padding variables into `-y` and `-x`.
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- Dropped `.pre-scrollable` class. [See #29135](https://github.com/twbs/bootstrap/pull/29135)
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- `.text-*` utilities do not add hover and focus states to links anymore. `.link-*` helper classes can be used instead. [See #29267](https://github.com/twbs/bootstrap/pull/29267)
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- Drop `.text-justify` class. [See #29793](https://github.com/twbs/bootstrap/pull/29793)
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### Typography
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- Removed `$display-*` variables for a new `$display-font-sizes` Sass map.
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- Removed individual `$display-*-weight` variables for a single `$display-font-weight`.
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- Added two new `.display-*` heading styles, `.display-5` and `.display-6`.
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- Resized existing display headings for a slightly more consistent set of `font-size`s.
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- Links are underlined by default (not just on hover), unless they're part of specific components.
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### Forms
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- Rearranged form documentation under its own top-level section.
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- Split out old Forms page into several subpages
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- Moved input groups docs under the new Forms section
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- Rearranged source Sass files under `scss/forms/`, including moving over input group styles.
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- Combined native and custom checkboxes and radios into a single `.form-check` class.
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- New checks support sizing via `em`/`font-size` or explicit modifier classes now.
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- New checks now appear larger by default for improved usability.
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- Dropped `.custom-control` and associated classes.
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- Renamed most `$custom-control` variables to `$form-control` ones.
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- Combined native and custom selects into `.form-select`.
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- Dropped `.custom-select` and associated classes.
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- Renamed most `$custom-select` variables to `$form-select` ones.
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- Updated file input component with the same overall design, but improved HTML.
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- Refactored `.form-file` markup to resolve some visual bugs while allowing translation and button text changes via HTML instead of CSS.
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- Dropped native `.form-control-file` and `.form-control-range` components entirely.
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- Renamed `.custom-file` to `.form-file` (including variables). **Watch out:** `.form-file` was later on dropped in `v5.0.0-alpha3`, now you can use `.form-control`.
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- Added support for `:focus` and `:disabled` styles.
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- Renamed `.custom-range` to `.form-range` (including variables).
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- Dropped `.form-group` for margin utilities (we've replaced our docs examples with `.mb-3`).
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- Dropped `.form-row` for the more flexible grid gutters.
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- Dropped `.form-inline` for the more flexible grid.
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- Dropped support for `.form-control-plaintext` inside `.input-group`s.
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- Dropped `.input-group-append` and `.input-group-prepend`. You can now just add buttons and `.input-group-text` as direct children of the input groups.
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- Form labels now require the `.form-label` class. Sass variables are now available to style form labels to your needs. [See #30476](https://github.com/twbs/bootstrap/pull/30476)
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### Components
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- Unified `padding` values for alerts, breadcrumbs, cards, dropdowns, list groups, modals, popovers, and tooltips to be based on our `$spacer` variable. [See #30564](https://github.com/twbs/bootstrap/pull/30564).
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#### Disabled states
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- Disabled states of the buttons, close button, pagination link & form range now have `pointer-events: none` added. This simplifies our codebase and makes it easier to override active states in CSS. [#29296](https://github.com/twbs/bootstrap/pull/29296).
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#### Alerts
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- Removed auto-darkening of `<hr>` elements in `.alert-*` class variants. `<hr>`s use `rgba()` for their color, so these should naturally blend anyway.
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#### Badges
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Badges were overhauled to better differentiate themselves from buttons and to better utilize utility classes.
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- Removed and replaced `.badge` modifier classes with background utility classes (e.g., use `.bg-primary` instead of `.badge-primary`)
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- Removed `.badge-pill` for the `.rounded-pill` utility class
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- Removed badge's hover and focus styles for `a.badge` and `button.badge`.
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#### Buttons
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- The checkbox/radio toggle is removed from the button plugin in favor of a CSS only solution, which is documented in the [form checks and radios]({{< docsref "/forms/checks-radios#toggle-buttons" >}}) docs. The `.btn-check` class can be added to inputs, any label with `.btn` and modifier class can be used to theme the labels. [See #30650](https://github.com/twbs/bootstrap/pull/30650).
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#### Cards
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- Removed the card columns in favor of a Masonry grid [See #28922](https://github.com/twbs/bootstrap/pull/28922).
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- Removed card decks in favor of the grid which adds more flexibility over responsive behavior.
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#### Jumbotron
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- The jumbotron component is removed in favor of utility classes like `.bg-light` for the background color and `.p-*` classes to control padding.
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#### Navbars
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- All navbars now require a container within. This drastically simplifies spacing requirements and removes the need for extensive CSS overrides we added for responsive containers in v4.
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#### Pagination
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- Pagination links now have customizable `margin-left` that are dynamically rounded on all corners when separated from one another.
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#### Popovers
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- Renamed `.arrow` to `.popover-arrow`
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#### Tooltips
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- Renamed `.arrow` to `.tooltip-arrow`
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### Accessibility
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- Unlike the old `.sr-only-focusable`, which only worked in combination with `.sr-only`, `.sr-only-focusable` can be used as a standalone class without `.sr-only`. [See #28720](https://github.com/twbs/bootstrap/pull/28720).
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### Utilities
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### Grid
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- Decreased the number of responsive order utilities per breakpoint. The highest order utility with a number now is `.order-5` instead of `.order-12`. [See #28874](https://github.com/twbs/bootstrap/pull/28874).
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### Misc
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- Added `.bg-body` for quickly setting the `<body>`'s background to additional elements.
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- Negative margin utilities are disabled by default. You can re-enable them by setting `$enable-negative-margins: true`, but keep in mind this can increase the file size quite a lot.
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### Docs
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- Removed "Wall of browser bugs" page because it has become obsolete
|
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- Switched from Jekyll to Hugo
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### Build tools
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- Updated all devDependencies
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- We support only the latest Node.js LTS releases which are 10 and 12 at the time of writing
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