mirror of
https://github.com/twbs/bootstrap.git
synced 2025-11-04 00:03:15 -05:00
f1b732031e
Refs https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements [skip sauce]
392 lines
9.9 KiB
SCSS
392 lines
9.9 KiB
SCSS
// scss-lint:disable QualifyingElement, DuplicateProperty
|
|
|
|
// Reboot
|
|
//
|
|
// Global resets to common HTML elements and more for easier usage by Bootstrap.
|
|
// Adds additional rules on top of Normalize.css, including several overrides.
|
|
|
|
|
|
// 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
|
|
// https://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 <meta name="viewport"> in
|
|
// some cases. See https://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/.
|
|
// Eventually @viewport will replace <meta name="viewport">.
|
|
//
|
|
// However, `device-width` is broken on IE 10 on Windows (Phone) 8,
|
|
// (see https://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 https://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 {
|
|
@-ms-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;
|
|
// As a side-effect of setting the @viewport above,
|
|
// IE11 & Edge make the scrollbar overlap the content and automatically hide itself when not in use.
|
|
// Unfortunately, the auto-showing of the scrollbar is sometimes too sensitive,
|
|
// thus making it hard to click on stuff near the right edge of the page.
|
|
// So we add this style to force IE11 & Edge to use a "normal", non-overlapping, non-auto-hiding scrollbar.
|
|
// See https://github.com/twbs/bootstrap/issues/18543
|
|
// and https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7165383/
|
|
-ms-overflow-style: scrollbar;
|
|
// 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;
|
|
font-weight: $font-weight-base;
|
|
line-height: $line-height-base;
|
|
// Go easy on the eyes and use something other than `#000` for text
|
|
color: $body-color;
|
|
// By default, `<body>` has no `background-color` so we set one as a best practice.
|
|
background-color: $body-bg;
|
|
}
|
|
|
|
// Suppress the focus outline on elements that cannot be accessed via keyboard.
|
|
// This prevents an unwanted focus outline from appearing around elements that
|
|
// might still respond to pointer events.
|
|
//
|
|
// Credit: https://github.com/suitcss/base
|
|
[tabindex="-1"]:focus {
|
|
outline: none !important;
|
|
}
|
|
|
|
|
|
//
|
|
// Typography
|
|
//
|
|
|
|
// Remove top margins from headings
|
|
//
|
|
// By default, `<h1>`-`<h6>` 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 `<p>`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
|
|
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;
|
|
}
|
|
|
|
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 `<pre>` 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, `<img>`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: `<img>`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 `<meta name="viewport" content="width=device-width">` 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.
|
|
// See https://bugs.webkit.org/show_bug.cgi?id=139848
|
|
// and 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 {
|
|
// Browsers set a default `min-width: min-content;` on fieldsets,
|
|
// unlike e.g. `<div>`s, which have `min-width: 0;` by default.
|
|
// So we reset that to ensure fieldsets behave more like a standard block element.
|
|
// See https://github.com/twbs/bootstrap/issues/12359
|
|
// and https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements
|
|
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;
|
|
}
|