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// stylelint-disable declaration-no-important, selector-no-qualifying-type, property-no-vendor-prefix
// Reboot
//
// Normalization of HTML elements, manually forked from Normalize.css to remove
// styles targeting irrelevant browsers while applying new styles.
//
// Normalize is licensed MIT. https://github.com/necolas/normalize.css
// Document
//
// Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.
*,
*::before,
*::after {
box-sizing: border-box;
}
// Root
//
// Ability to the value of the root font sizes, affecting the value of `rem`.
// null by default, thus nothing is generated.
:root {
@if $font-size-root != null {
@include font-size(var(--#{$prefix}root-font-size));
}
@if $enable-smooth-scroll {
@media (prefers-reduced-motion: no-preference) {
scroll-behavior: smooth;
}
}
// Boosted mod: Improve focus visibility when fixed/sticky header is used
// See https://caniuse.com/?search=scroll-padding
// scss-docs-start scroll-offset
@if $enable-fixed-header {
scroll-padding-top: $scroll-offset-top * .5;
@include media-breakpoint-up(lg) {
scroll-padding-top: $scroll-offset-top;
}
}
// scss-docs-end scroll-offset
// End mod
}
// Body
//
// 1. Remove the margin in all browsers.
// 2. As a best practice, apply a default `background-color`.
// 3. Prevent adjustments of font size after orientation changes in iOS.
// 4. Change the default tap highlight to be completely transparent in iOS.
// 5. Prevent faux-bold/italic
// See https://developer.mozilla.org/fr/docs/Web/CSS/font-synthesis
// scss-docs-start reboot-body-rules
body {
position: relative; // Boosted mod: required for back-to-top component
margin: 0; // 1
font-family: var(--#{$prefix}body-font-family);
font-synthesis: none; // Boosted mod // 5
@include font-size(var(--#{$prefix}body-font-size));
font-weight: var(--#{$prefix}body-font-weight);
line-height: var(--#{$prefix}body-line-height);
// Boosted mod: no color
text-align: var(--#{$prefix}body-text-align);
/* rtl:remove */
letter-spacing: $letter-spacing-base; // Boosted mod
background-color: var(--#{$prefix}body-bg); // 2
-webkit-text-size-adjust: 100%; // 3
-webkit-tap-highlight-color: rgba($black, 0); // 4
-webkit-font-smoothing: subpixel-antialiased; // Boosted mod
text-rendering: optimizespeed; // Boosted mod
}
// scss-docs-end reboot-body-rules
// Boosted mod: focus state
//
// 1. Default focus state
// 2. Using the :focus-visible polyfill to hide outline defensively
// See https://github.com/WICG/focus-visible
// Note 1: this rule is not applied for our focus ring helper which
// handles itself outline and box shadow
// Note 2: this rule is also not applied for invalid select and invalid input files to ensure
// sufficient contrast between select elements on error focused vs. non focused
// 3. Using the :focus-visible pseudo-class if supported by the browser
// scss-docs-start focus-visibility
:focus {
@include focus-visible(); // 1
}
.js-focus-visible :focus:not([data-focus-visible-added]):not(.focus-ring):not(.form-select:invalid):not(.form-control[type="file"]:invalid),
.js-focus-visible .focus:not([data-focus-visible-added]):not(.focus-ring):not(.form-select:invalid):not(.form-control[type="file"]:invalid) { // 2
outline: 0 !important;
box-shadow: none;
}
:focus:not(:focus-visible):not(.focus-ring):not(.form-select:invalid):not(.form-control[type="file"]:invalid) { // 3
outline: 0 !important;
box-shadow: none;
}
// scss-docs-end focus-visibility
// End mod
// Content grouping
//
// 1. Reset Firefox's gray color
hr {
margin: $hr-margin-y 0;
color: $hr-color; // 1
border: 0;
border-top: $hr-border-width solid $hr-border-color;
opacity: $hr-opacity;
}
// Typography
//
// 1. 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.
%heading {
margin-top: 0; // 1
margin-bottom: $headings-margin-bottom;
@include font-size($font-size-base); // Boosted mod
font-family: $headings-font-family;
font-style: $headings-font-style;
font-weight: $headings-font-weight;
line-height: $headings-line-height;
color: var(--#{$prefix}heading-color);
/* rtl:remove */
letter-spacing: $letter-spacing-base; // Boosted mod
-webkit-font-smoothing: antialiased; // Boosted mod
-moz-osx-font-smoothing: grayscale; // Boosted mod
text-rendering: optimizelegibility; // Boosted mod
}
h1 {
@extend %heading;
@include font-size($h4-font-size);
line-height: $h4-line-height;
/* rtl:remove */
letter-spacing: $h4-spacing;
}
h2,
h3 {
@extend %heading;
@include font-size($h5-font-size);
line-height: $h5-line-height;
/* rtl:remove */
letter-spacing: $h5-spacing;
}
h4,
h5,
h6 {
@extend %heading;
}
// 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: $paragraph-margin-bottom;
}
// Abbreviations
//
// 1. Add the correct text decoration in Chrome, Edge, Opera, and Safari.
// 2. Add explicit cursor to indicate changed behavior.
// 3. Prevent the text-decoration to be skipped.
abbr[title] {
text-decoration: underline dotted; // 1
cursor: help; // 2
text-decoration-skip-ink: none; // 3
}
// Address
address {
margin-bottom: 1rem;
font-style: normal;
line-height: inherit;
}
// Lists
ol,
ul {
padding-left: 2rem;
}
ol,
ul,
dl {
margin-top: 0;
margin-bottom: 1rem;
}
ol ol,
ul ul,
ol ul,
ul ol {
margin-bottom: 0;
}
// Boosted mod
// Orange square list-style
ul {
list-style-type: square;
}
// Future-proof markers' color
// See https://developer.mozilla.org/fr/docs/Web/CSS/::marker
// stylelint-disable selector-max-type
li::marker {
color: var(--#{$prefix}primary);
vertical-align: middle;
ol & {
color: inherit;
}
}
li li::marker { color: var(--#{$prefix}secondary-color); }
li li li::marker { color: var(--#{$prefix}tertiary-color); }
// Bullet-proof markers' color
// @todo To remove when ::marker support is OK
// See https://caniuse.com/#search=%3A%3Amarker
li::before {
color: var(--#{$prefix}primary);
vertical-align: text-top;
ol & {
color: inherit;
}
}
li li::before { color: var(--#{$prefix}secondary-color); }
li li li::before { color: var(--#{$prefix}tertiary-color); }
// stylelint-enable selector-max-type
// End mod
dt {
font-weight: $dt-font-weight;
}
// 1. Undo browser default
dd {
margin-bottom: .5rem;
margin-left: 0; // 1
}
// Blockquote
blockquote {
margin: 0 0 1rem;
}
// Strong
//
// Add the correct font weight in Chrome, Edge, and Safari
b,
em, // Boosted mod
strong {
font-weight: $font-weight-bold; // Boosted mod: ensure 700
}
// Small
//
// Add the correct font size in all browsers
small {
@include font-size($small-font-size);
// Boosted mod
font-weight: $font-weight-normal;
line-height: $line-height-sm;
// End mod
}
// Mark
mark {
padding: $mark-padding;
color: var(--#{$prefix}highlight-color);
background-color: var(--#{$prefix}highlight-bg);
}
// Sub and Sup
//
// Prevent `sub` and `sup` elements from affecting the line height in
// all browsers.
sub,
sup {
position: relative;
@include font-size($sub-sup-font-size);
line-height: 0;
vertical-align: baseline;
}
sub { bottom: -.25em; }
sup { top: -.5em; }
// Links
a {
color: rgba(var(--#{$prefix}link-color-rgb), var(--#{$prefix}link-opacity, 1));
text-decoration: $link-decoration;
&:hover {
--#{$prefix}link-color-rgb: var(--#{$prefix}link-hover-color-rgb);
text-decoration: $link-hover-decoration;
}
}
// And undo these styles for placeholder links/named anchors (without href).
// 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([class]) {
&,
&:hover {
color: inherit;
text-decoration: none;
}
}
// Code
var, // Boosted mod
pre,
code,
kbd,
samp {
font-family: $font-family-code;
@include font-size(1em); // Correct the odd `em` font sizing in all browsers.
}
// 1. Remove browser default top margin
// 2. Reset browser default of `1em` to use `rem`s
// 3. Don't allow content to break outside
pre {
display: block;
margin-top: 0; // 1
margin-bottom: 1rem; // 2
overflow: auto; // 3
@include font-size($code-font-size);
line-height: $pre-line-height; // Boosted mod
color: $pre-color;
// Account for some code outputs that place code tags in pre tags
code {
@include font-size(inherit);
color: inherit;
word-break: normal;
}
}
var, // Boosted mod
code {
@include font-size($code-font-size);
font-style: normal; // Boosted mod: is italic in all browsers
line-height: $line-height-sm; // Boosted mod
color: var(--#{$prefix}code-color);
word-wrap: break-word;
// Streamline the style when inside anchors to avoid broken underline and more
a > & {
color: inherit;
}
}
kbd {
padding: $kbd-padding-y $kbd-padding-x;
@include font-size($kbd-font-size);
color: $kbd-color;
background-color: $kbd-bg;
@include border-radius($border-radius-sm);
kbd {
padding: 0;
@include font-size(1em);
font-weight: $nested-kbd-font-weight;
}
}
// Figures
//
// Apply a consistent margin strategy (matches our type styles).
figure {
margin: 0 0 1rem;
}
// Images and content
img,
svg {
vertical-align: middle;
}
// Tables
//
// 1. Prevent double borders
// 2. Ensure horizontal alignment in table when using numbers
// See https://twitter.com/wesbos/status/932644812582522880
// See https://caniuse.com/#feat=font-variant-numeric
// See https://caniuse.com/#feat=font-feature
// See https://helpx.adobe.com/fonts/using/open-type-syntax.html#tnum
table {
font-feature-settings: "tnum"; // Boosted mod: 2
font-variant-numeric: tabular-nums; // Boosted mod: 2
caption-side: top; // Boosted mod
border-collapse: collapse;
}
caption {
padding-top: $table-caption-padding-y;
padding-bottom: $table-caption-padding-y;
@include font-size($h1-font-size); // Boosted mod
font-weight: $font-weight-bold; // Boosted mod
color: $table-caption-color;
text-align: left;
/* rtl:remove */
letter-spacing: $h1-spacing; // Boosted mod
-webkit-font-smoothing: antialiased; // Boosted mod
-moz-osx-font-smoothing: grayscale; // Boosted mod
text-rendering: optimizelegibility; // Boosted mod
}
// 1. Removes font-weight bold by inheriting
// 2. Matches default `` alignment by inheriting `text-align`.
// 3. Fix alignment for Safari
th {
font-weight: $table-th-font-weight; // 1
text-align: inherit; // 2
text-align: -webkit-match-parent; // 3
}
thead,
tbody,
tfoot,
tr,
td,
th {
border-color: inherit;
border-style: solid;
border-width: 0;
}
// Forms
//
// 1. Allow labels to use `margin` for spacing.
label {
display: inline-block; // 1
font-weight: $form-label-font-weight; // Boosted mod
}
// Remove the default `border-radius` that macOS Chrome adds.
// See https://github.com/twbs/bootstrap/issues/24093
button {
// stylelint-disable-next-line property-disallowed-list
border-radius: 0;
}
// Explicitly remove focus outline in Chromium when it shouldn't be
// visible (e.g. as result of mouse click or touch tap). It already
// should be doing this automatically, but seems to currently be
// confused and applies its very visible two-tone outline anyway.
//
// This rule is not applied with the focus ring utility which handles
// itself outline and box shadow
button:focus:not(:focus-visible):not(.focus-ring) {
outline: 0;
box-shadow: none; // Bosted mod
}
// 1. Remove the margin in Firefox and Safari
input,
button,
select,
optgroup,
textarea {
margin: 0; // 1
font-family: inherit;
@include font-size(inherit);
line-height: inherit;
/* rtl:remove */
letter-spacing: inherit; // Boosted mod
box-shadow: none; // Boosted mod: prevent native validation styles to apply
}
// Remove the inheritance of text transform in Firefox
button,
select {
text-transform: none;
}
// Set the cursor for non-`