Proyectos de Subversion Moodle

// 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

//

// 1. Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.

// 2. Change the default font family in all browsers.

// 3. Correct the line height in all browsers.

// 4. Prevent adjustments of font size after orientation changes in IE on Windows Phone and in iOS.

// 5. Change the default tap highlight to be completely transparent in iOS.

*,

*::before,

*::after {

  box-sizing: border-box; // 1

}

html {

  font-family: sans-serif; // 2

  line-height: 1.15; // 3

  -webkit-text-size-adjust: 100%; // 4

  -webkit-tap-highlight-color: rgba($black, 0); // 5

}

// Shim for "new" HTML5 structural elements to display correctly (IE10, older browsers)

// TODO: remove in v5

// stylelint-disable-next-line selector-list-comma-newline-after

article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {

  display: block;

}

// Body

//

// 1. Remove the margin in all browsers.

// 2. As a best practice, apply a default `background-color`.

// 3. Set an explicit initial text-align value so that we can later use

//    the `inherit` value on things like `<th>` elements.

body {

  margin: 0; // 1

  font-family: $font-family-base;

  @include font-size($font-size-base);

  font-weight: $font-weight-base;

  line-height: $line-height-base;

  color: $body-color;

  text-align: left; // 3

  background-color: $body-bg; // 2

}

// Future-proof rule: in browsers that support :focus-visible, suppress the focus outline

// on elements that programmatically receive focus but wouldn't normally show a visible

// focus outline. In general, this would mean that the outline is only applied if the

// interaction that led to the element receiving programmatic focus was a keyboard interaction,

// or the browser has somehow determined that the user is primarily a keyboard user and/or

// wants focus outlines to always be presented.

//

// See https://developer.mozilla.org/en-US/docs/Web/CSS/:focus-visible

// and https://developer.paciellogroup.com/blog/2018/03/focus-visible-and-backwards-compatibility/

[tabindex="-1"]:focus:not(:focus-visible) {

  outline: 0 !important;

}

// Content grouping

//

// 1. Add the correct box sizing in Firefox.

// 2. Show the overflow in Edge and IE.

hr {

  box-sizing: content-box; // 1

  height: 0; // 1

  overflow: visible; // 2

}

//

// 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.

// 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 `<p>`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).

// 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]) {

  color: inherit;

  text-decoration: none;

  @include hover() {

    color: inherit;

    text-decoration: none;

  }

}

//

// 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;

  // Disable auto-hiding scrollbar in IE & legacy Edge to avoid overlap,

  // making it impossible to interact with the content

  -ms-overflow-style: scrollbar;

}

//

// 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;

}

// 1. Removes font-weight bold by inheriting

// 2. Matches default `<td>` 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

}

//

// 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-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;

}

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

}

// Set the cursor for non-`<button>` buttons

//

// Details at https://github.com/twbs/bootstrap/pull/30562

[role="button"] {

  cursor: pointer;

}

// 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-

}

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. `<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;

}

// 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;

}