// 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 $enable-smooth-scroll { @media (prefers-reduced-motion: no-preference) { scroll-behavior: smooth; } } } // Body // // 1. Remove the margin in all browsers. // 2. As a best practice, apply a default `background-color`. // 3. Prevent adjustments of font size after orientation changes in iOS. // 4. Change the default tap highlight to be completely transparent in iOS. // scss-docs-start reboot-body-rules body { margin: 0; // 1 font-family: var(--#{$prefix}body-font-family); @include font-size(var(--#{$prefix}body-font-size)); font-weight: var(--#{$prefix}body-font-weight); line-height: var(--#{$prefix}body-line-height); color: var(--#{$prefix}body-color); text-align: var(--#{$prefix}body-text-align); background-color: var(--#{$prefix}body-bg); // 2 -webkit-text-size-adjust: 100%; // 3 -webkit-tap-highlight-color: rgba($black, 0); // 4 } // scss-docs-end reboot-body-rules // 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; 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, inherit); } h1 { @extend %heading; @include font-size($h1-font-size); } h2 { @extend %heading; @include font-size($h2-font-size); } h3 { @extend %heading; @include font-size($h3-font-size); } h4 { @extend %heading; @include font-size($h4-font-size); } h5 { @extend %heading; @include font-size($h5-font-size); } h6 { @extend %heading; @include font-size($h6-font-size); } // 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; } 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, strong { font-weight: $font-weight-bolder; } // Small // // Add the correct font size in all browsers small { @include font-size($small-font-size); } // Mark mark { padding: $mark-padding; background-color: var(--#{$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 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); color: $pre-color; // Account for some code outputs that place code tags in pre tags code { @include font-size(inherit); color: inherit; word-break: normal; } } code { @include font-size($code-font-size); 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 // // Prevent double borders table { caption-side: bottom; border-collapse: collapse; } caption { padding-top: $table-cell-padding-y; padding-bottom: $table-cell-padding-y; color: $table-caption-color; text-align: left; } // 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 } // 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. button:focus:not(:focus-visible) { outline: 0; } // 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; } // Remove the inheritance of text transform in Firefox button, select { text-transform: none; } // Set the cursor for non-`