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Filename : _reboot.scss
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// scss-lint:disable ImportantRule, 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
// http://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 http://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 http://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 http://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
//

// 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;
}

// This is specified in runtime Emotion GlobalStyles but we need them for the Grafana loading styles
html {
  font-size: $font-size-base;
  height: 100%;
}

// This is specified in runtime Emotion GlobalStyles but we need them for the Grafana loading styles
body {
  font-family: $font-family-sans-serif;
  font-size: $font-size-base;
  line-height: $line-height-base;
  color: $text-color;
  background-color: $body-bg;
  height: 100%;
  width: 100%;
  position: absolute;
}

//
// 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: $space-sm;
}

// 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: $space-md;
}

// Abbreviations and acronyms
abbr[title] {
  cursor: help;
  border-bottom: 1px dotted $abbr-border-color;
}

address {
  margin-bottom: $space-md;
  font-style: normal;
  line-height: inherit;
}

ol,
ul,
dl {
  margin-top: 0;
  margin-bottom: 0;
}

ol ol,
ul ul,
ol ul,
ul ol {
  margin-bottom: 0;
}

dt {
  font-weight: $font-weight-semi-bold;
}

dd {
  margin-bottom: $space-sm;
  margin-left: 0; // Undo browser default
}

blockquote {
  margin: 0 0 $space-md;
}

//
// Links
//

//
// Code
//

pre {
  // Remove browser default top margin
  margin-top: 0;
  // Reset browser default of `1em` to use `rem`s
  margin-bottom: $space-md;
}

//
// 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 $space-md;
}

//
// 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:
// * http://v4-alpha.getbootstrap.com/content/reboot/#click-delay-optimization-for-touch
// * http://caniuse.com/#feat=css-touch-action
// * http://patrickhlauke.github.io/touch/tests/results/#suppressing-300ms-delay

a,
area,
button,
[role='button'],
input,
label,
select,
summary,
textarea {
  touch-action: manipulation;
}

//
// Tables
//

table {
  // Reset for nesting within parents with `background-color`.
  background-color: transparent;
}

caption {
  padding-top: $space-inset-squish-md;
  padding-bottom: $space-inset-squish-md;
  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;
}

// 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 {
  // Remove all `margin`s so our classes don't have to do it themselves.
  margin: 0;
  // Normalize includes `font: inherit;`, so `font-family`. `font-size`, etc are
  // properly inherited. However, `line-height` isn't addressed there. Using this
  // ensures we don't need to unnecessarily redeclare the global font stack.
  line-height: inherit;
  // iOS adds rounded borders by default
  border-radius: 0;
}

textarea {
  // Textareas should really only resize vertically so they don't break their (horizontal) containers.
  resize: vertical;
}

fieldset {
  // Chrome and Firefox set a `min-width: min-content;` on fieldsets,
  // so we reset that to ensure it behaves more like a standard block element.
  // See https://github.com/twbs/bootstrap/issues/12359.
  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: $space-sm;
  font-size: $space-lg;
  line-height: inherit;
  //  border: 0;
}

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;
}