`-`

` all receive top and bottom margins. We nuke the top // margin for easier control within type scales as it avoids margin collapsing. // stylelint-disable-next-line selector-list-comma-newline-after h1, h2, h3, h4, h5, h6 { margin-top: 0; margin-bottom: $headings-margin-bottom; } // 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. Duplicate behavior to the data-* attribute for our tooltip plugin // 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari. // 3. Add explicit cursor to indicate changed behavior. // 4. Remove the bottom border in Firefox 39-. // 5. Prevent the text-decoration to be skipped. abbr[title], abbr[data-original-title] { // 1 text-decoration: underline; // 2 text-decoration: underline dotted; // 2 cursor: help; // 3 border-bottom: 0; // 4 text-decoration-skip-ink: none; // 5 } 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; } b, strong { font-weight: $font-weight-bolder; // Add the correct font weight in Chrome, Edge, and Safari } small { @include font-size(80%); // Add the correct font size in all browsers } // // Prevent `sub` and `sup` elements from affecting the line height in // all browsers. // sub, sup { position: relative; @include font-size(75%); line-height: 0; vertical-align: baseline; } sub { bottom: -.25em; } sup { top: -.5em; } // // Links // a { color: $link-color; text-decoration: $link-decoration; background-color: transparent; // Remove the gray background on active links in IE 10. @include hover { color: $link-hover-color; text-decoration: $link-hover-decoration; } } // 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: 0; } } // // Code // pre, code, kbd, samp { font-family: $font-family-monospace; @include font-size(1em); // Correct the odd `em` font sizing in all browsers. } pre { // Remove browser default top margin margin-top: 0; // Reset browser default of `1em` to use `rem`s margin-bottom: 1rem; // Don't allow content to break outside overflow: auto; } // // Figures // figure { // Apply a consistent margin strategy (matches our type styles). margin: 0 0 1rem; } // // Images and content // img { vertical-align: middle; border-style: none; // Remove the border on images inside links in IE 10-. } svg { // Workaround for the SVG overflow bug in IE10/11 is still required. // See https://github.com/twbs/bootstrap/issues/26878 overflow: hidden; vertical-align: middle; } // // Tables // table { border-collapse: collapse; // Prevent double borders } caption { padding-top: $table-cell-padding; padding-bottom: $table-cell-padding; color: $table-caption-color; text-align: left; caption-side: bottom; } th { // Matches default `` alignment by inheriting from the ``, or the // closest parent with a set `text-align`. text-align: inherit; } // // Forms // label { // Allow labels to use `margin` for spacing. display: inline-block; margin-bottom: $label-margin-bottom; } // Remove the default `border-radius` that macOS Chrome adds. // // Details at https://github.com/twbs/bootstrap/issues/24093 button { // stylelint-disable-next-line property-blacklist border-radius: 0; } // 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, optgroup, textarea { margin: 0; // Remove the margin in Firefox and Safari font-family: inherit; @include font-size(inherit); line-height: inherit; } button, input { overflow: visible; // Show the overflow in Edge } button, select { text-transform: none; // Remove the inheritance of text transform in Firefox } // Remove the inheritance of word-wrap in Safari. // // Details at https://github.com/twbs/bootstrap/issues/24990 select { word-wrap: normal; } // 1. Prevent a WebKit bug where (2) destroys native `audio` and `video` // controls in Android 4. // 2. Correct the inability to style clickable types in iOS and Safari. button, [type="button"], // 1 [type="reset"], [type="submit"] { -webkit-appearance: button; // 2 } // Opinionated: add "hand" cursor to non-disabled button elements. @if $enable-pointer-cursor-for-buttons { button, [type="button"], [type="reset"], [type="submit"] { &:not(:disabled) { cursor: pointer; } } } // Remove inner border and padding from Firefox, but don't restore the outline like Normalize. button::-moz-focus-inner, [type="button"]::-moz-focus-inner, [type="reset"]::-moz-focus-inner, [type="submit"]::-moz-focus-inner { padding: 0; border-style: none; } input[type="radio"], input[type="checkbox"] { box-sizing: border-box; // 1. Add the correct box sizing in IE 10- padding: 0; // 2. Remove the padding in IE 10- } 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 { overflow: auto; // Remove the default vertical scrollbar in IE. // 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. `

`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; } // 1. Correct the text wrapping in Edge and IE. // 2. Correct the color inheritance from `fieldset` elements in IE. legend { display: block; width: 100%; max-width: 100%; // 1 padding: 0; margin-bottom: .5rem; @include font-size(1.5rem); line-height: inherit; color: inherit; // 2 white-space: normal; // 1 } progress { vertical-align: baseline; // Add the correct vertical alignment in Chrome, Firefox, and Opera. } // Correct the cursor style of increment and decrement buttons in Chrome. [type="number"]::-webkit-inner-spin-button, [type="number"]::-webkit-outer-spin-button { height: auto; } [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. outline-offset: -2px; // 2. Correct the outline style in Safari. -webkit-appearance: none; } // // Remove the inner padding in Chrome and Safari on macOS. // [type="search"]::-webkit-search-decoration { -webkit-appearance: none; } // // 1. Correct the inability to style clickable types in iOS and Safari. // 2. Change font properties to `inherit` in Safari. // ::-webkit-file-upload-button { font: inherit; // 2 -webkit-appearance: button; // 1 } // // Correct element displays // output { display: inline-block; } summary { display: list-item; // Add the correct display in all browsers cursor: pointer; } template { display: none; // Add the correct display in IE } // Always hide an element with the `hidden` HTML attribute (from PureCSS). // Needed for proper display in IE 10-. [hidden] { display: none !important; }