// Reboot // // Global resets to common HTML elements and more for easier usage by Bootstrap. // Builds on the resets of Normalize.css. // Reset the box-sizing // // Change from `box-sizing: content-box` to `border-box` so that when you add // `padding` or `border`s to an element, the overall declared `width` does not // change. For example, `width: 100px;` will always be `100px` despite the // `border: 10px solid red;` and `padding: 20px;`. // // Heads up! This reset may cause conflicts with some third-party widgets. For // recommendations on resolving such conflicts, see // http://getbootstrap.com/getting-started/#third-box-sizing. // // Credit: https://css-tricks.com/inheriting-box-sizing-probably-slightly-better-best-practice/ html { box-sizing: border-box; } *, *::before, *::after { box-sizing: inherit; } // Make viewport responsive // // @viewport is needed because IE 10+ doesn't honor in // some cases. See http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/. // Eventually @viewport will replace . It's been manually // prefixed for forward-compatibility. // // However, `device-width` is broken on IE 10 on Windows (Phone) 8, // (see http://timkadlec.com/2013/01/windows-phone-8-and-device-width/ and https://github.com/twbs/bootstrap/issues/10497) // and the fix for that involves a snippet of JavaScript to sniff the user agent // and apply some conditional CSS. // // See http://getbootstrap.com/getting-started/#support-ie10-width for the relevant hack. // Wrap `@viewport` with `@at-root` for when folks do a nested import (e.g., // `.class-name { @import "bootstrap"; }`). @at-root { @-moz-viewport { width: device-width; } @-ms-viewport { width: device-width; } @-o-viewport { width: device-width; } @-webkit-viewport { width: device-width; } @viewport { width: device-width; } } // // Reset HTML, body, and more // html { // Sets a specific default `font-size` for user with `rem` type scales. font-size: $font-size-root; // Changes the default tap highlight to be completely transparent in iOS. -webkit-tap-highlight-color: rgba(0,0,0,0); } body { // Make the `body` use the `font-size-root` font-family: $font-family-base; font-size: $font-size-base; line-height: $line-height; // Go easy on the eyes and use something other than `#000` for text color: $body-color; // By default, `` has no `background-color` so we set one as a best practice. background-color: $body-bg; } // // Typography // // Remove top margins from headings // // By default, `

`-`

` all receive top and bottom margins. We nuke the top // margin for easier control within type scales as it avoids margin collapsing. h1, h2, h3, h4, h5, h6 { margin-top: 0; margin-bottom: .5rem; } // Reset margins on paragraphs // // Similarly, the top margin on `

`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: bold; } dd { margin-bottom: .5rem; margin-left: 0; // Undo browser default } blockquote { margin: 0 0 1rem; } // // Links // a { color: $link-color; text-decoration: none; @include hover-focus { color: $link-hover-color; text-decoration: $link-hover-decoration; } &:focus { @include tab-focus(); } } // // Code // pre { // Remove browser default top margin margin-top: 0; // Reset browser default of `1em` to use `rem`s margin-bottom: 1rem; } // // 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; } // 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 // Upstream patch for normalize.css submitted: https://github.com/necolas/normalize.css/pull/379 - remove this fix once that is merged [role="button"] { cursor: pointer; } // // Tables // table { // 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 can use `margin` for spacing. display: inline-block; margin-bottom: .5rem; } input, button, select, textarea { // Remove all `margin`s so our classes don't have to do it themselves. margin: 0; // Normalize includes `font: inherit;`, so `font-family`. `font-size`, etc are // properly inherited. However, `line-height` isn't addressed there. Using this // ensures we don't need to unnecessarily redeclare the global font stack. line-height: inherit; } 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; // border: 0; } 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; }