`s get reset. However, we also reset the // bottom margin to use `rem` units instead of `em`. p { margin-top: 0; margin-bottom: 1rem; } // Abbreviations and acronyms abbr[title], // Add data-* attribute to help out our tooltip plugin, per https://github.com/twbs/bootstrap/issues/5257 abbr[data-original-title] { cursor: help; border-bottom: 1px dotted $abbr-border-color; } address { margin-bottom: 1rem; font-style: normal; line-height: inherit; } ol, ul, dl { margin-top: 0; margin-bottom: 1rem; } ol ol, ul ul, ol ul, ul ol { margin-bottom: 0; } dt { font-weight: $dt-font-weight; } dd { margin-bottom: .5rem; margin-left: 0; // Undo browser default } blockquote { margin: 0 0 1rem; } // // Links // a { color: $link-color; text-decoration: $link-decoration; @include hover-focus { color: $link-hover-color; text-decoration: $link-hover-decoration; } &:focus { @include tab-focus(); } } // And undo these styles for placeholder links/named anchors (without href) // which have not been made explicitly keyboard-focusable (without tabindex). // It would be more straightforward to just use a[href] in previous block, but that // causes specificity issues in many other styles that are too complex to fix. // See https://github.com/twbs/bootstrap/issues/19402 a:not([href]):not([tabindex]) { color: inherit; text-decoration: none; @include hover-focus { color: inherit; text-decoration: none; } &:focus { outline: none; } } // // Code // pre { // Remove browser default top margin margin-top: 0; // Reset browser default of `1em` to use `rem`s margin-bottom: 1rem; // Normalize v4 removed this property, causing `
` content to break out of wrapping code snippets
overflow: auto;
}
//
// Figures
//
figure {
// Normalize adds `margin` to `figure`s as browsers apply it inconsistently.
// We reset that to create a better flow in-page.
margin: 0 0 1rem;
}
//
// Images
//
img {
// By default, `![]()
`s are `inline-block`. This assumes that, and vertically
// centers them. This won't apply should you reset them to `block` level.
vertical-align: middle;
// Note: `![]()
`s are deliberately not made responsive by default.
// For the rationale behind this, see the comments on the `.img-fluid` class.
}
// iOS "clickable elements" fix for role="button"
//
// Fixes "clickability" issue (and more generally, the firing of events such as focus as well)
// for traditionally non-focusable elements with role="button"
// see https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
[role="button"] {
cursor: pointer;
}
// Avoid 300ms click delay on touch devices that support the `touch-action` CSS property.
//
// In particular, unlike most other browsers, IE11+Edge on Windows 10 on touch devices and IE Mobile 10-11
// DON'T remove the click delay when `` is present.
// However, they DO support removing the click delay via `touch-action: manipulation`.
// See:
// * https://v4-alpha.getbootstrap.com/content/reboot/#click-delay-optimization-for-touch
// * http://caniuse.com/#feat=css-touch-action
// * https://patrickhlauke.github.io/touch/tests/results/#suppressing-300ms-delay
a,
area,
button,
[role="button"],
input,
label,
select,
summary,
textarea {
touch-action: manipulation;
}
//
// Tables
//
table {
// No longer part of Normalize since v4
border-collapse: collapse;
// Reset for nesting within parents with `background-color`.
background-color: $table-bg;
}
caption {
padding-top: $table-cell-padding;
padding-bottom: $table-cell-padding;
color: $text-muted;
text-align: left;
caption-side: bottom;
}
th {
// Centered by default, but left-align-ed to match the `td`s below.
text-align: left;
}
//
// Forms
//
label {
// Allow labels to use `margin` for spacing.
display: inline-block;
margin-bottom: .5rem;
}
// Work around a Firefox/IE bug where the transparent `button` background
// results in a loss of the default `button` focus styles.
//
// Credit: https://github.com/suitcss/base/
button:focus {
outline: 1px dotted;
outline: 5px auto -webkit-focus-ring-color;
}
input,
button,
select,
textarea {
// Normalize includes `font: inherit;`, so `font-family`. `font-size`, etc are
// properly inherited. However, `line-height` isn't inherited there.
line-height: inherit;
}
input[type="radio"],
input[type="checkbox"] {
// Apply a disabled cursor for radios and checkboxes.
//
// Note: Neither radios nor checkboxes can be readonly.
&:disabled {
cursor: $cursor-disabled;
}
}
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="month"] {
// Remove the default appearance of temporal inputs to avoid a Mobile Safari
// bug where setting a custom line-height prevents text from being vertically
// centered within the input.
//
// Bug report: https://github.com/twbs/bootstrap/issues/11266
-webkit-appearance: listbox;
}
textarea {
// Textareas should really only resize vertically so they don't break their (horizontal) containers.
resize: vertical;
}
fieldset {
// Chrome and Firefox set a `min-width: min-content;` on fieldsets,
// so we reset that to ensure it behaves more like a standard block element.
// See https://github.com/twbs/bootstrap/issues/12359.
min-width: 0;
// Reset the default outline behavior of fieldsets so they don't affect page layout.
padding: 0;
margin: 0;
border: 0;
}
legend {
// Reset the entire legend element to match the `fieldset`
display: block;
width: 100%;
padding: 0;
margin-bottom: .5rem;
font-size: 1.5rem;
line-height: inherit;
}
input[type="search"] {
// This overrides the extra rounded corners on search inputs in iOS so that our
// `.form-control` class can properly style them. Note that this cannot simply
// be added to `.form-control` as it's not specific enough. For details, see
// https://github.com/twbs/bootstrap/issues/11586.
-webkit-appearance: none;
}
// todo: needed?
output {
display: inline-block;
// font-size: $font-size-base;
// line-height: $line-height;
// color: $input-color;
}
// Always hide an element with the `hidden` HTML attribute (from PureCSS).
[hidden] {
display: none !important;
}