devdocs/assets/stylesheets/global/_base.scss

html {
  height: 100%;
  font-size: 100%;
  background: $documentBackground;

  @media #{$mediumScreen} { font-size: 93.75%; }
}

body {
  height: 100%;
  margin: 0;
  overflow: auto;
  font: normal 1em/1.7 $baseFont;
  color: $textColor;
  word-wrap: break-word;
  overflow-wrap: break-word;
  -webkit-tap-highlight-color: rgba(black, 0);
  -webkit-touch-callout: none;
  -webkit-text-size-adjust: 100%;
      -ms-text-size-adjust: 100%;
}

a {
  color: $linkColor;
  text-decoration: none;

  &:hover {
    color: $linkColorHover;
    text-decoration: underline;
  }
}

img {
  max-width: 100%;
  height: auto;
  border: 0;
}

h1, h2, h3, h4, h5, h6 {
  margin: 1.5em 0 1em;
  line-height: 1.3;
  font-weight: bold;
}

h1 { font-size: 1.5em; }
h2 { font-size: 1.375em; }
h3 { font-size: 1.25em; }
h4 { font-size: 1.125em; }
h5, h6 { font-size: 1em; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

b, strong { font-weight: bold; }

small { font-size: .9em; }

ul, ol {
  margin: 1.5em 0;
  padding: 0 0 0 2em;
  list-style: disc outside;
}

ul ul { list-style-type: circle; }
ol { list-style-type: decimal; }
ol ol { list-style-type: lower-alpha; }
ol ol ol { list-style-type: lower-roman; }

li + li { margin-top: .25em; }
li > ul, li > ol, dd > ul, dd > ol { margin: .5em 0; }
li > p { margin-bottom: .25em; }

dl { margin: 1.5em 0; }
dt { font-weight: bold; }
dd {
  margin: .375em;
  padding-left: 1em;

  + dt { margin-top: 1em; }
}

dfn, var { font-style: normal; }

abbr, acronym, dfn {
  cursor: help;
  border-bottom: 1px dotted $textColor;
}

pre, code, samp, %pre, %code {
  font-family: $monoFont;
  font-weight: normal;
  font-style: normal;
  font-size: .9em;
  color: $textColor;
  white-space: pre-wrap;
  direction: ltr;
  -moz-tab-size: 2;
    -o-tab-size: 2;
       tab-size: 2;
}

pre, %pre {
  position: relative;
  margin: 1.5em 0;
  padding: .375rem .625rem;
  line-height: 1.5;
  overflow: auto;
  @extend %box;
}

a > code { color: inherit; }

table {
  margin: 1.5em 0;
  background: none;
  border: 1px solid $boxBorder;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 3px;
}

th, td {
  vertical-align: top;
  padding: .3em .7em;
  padding-bottom: -webkit-calc(.3em + 1px);
  padding-bottom:         calc(.3em + 1px);
  text-align: left;
}

th {
  border: 0;
  border-bottom: 1px solid $boxBorder;
  border-radius: 0;
  @extend %heading-box;

  &:empty { background: none; }

  + th, + td { border-left: 1px solid $boxBorder; }

  tr:first-child > &:first-child { border-top-left-radius: 3px; }
  tr:first-child > &:last-child { border-top-right-radius: 3px; }
  tr:last-child > &:first-child { border-bottom-left-radius: 3px; }
  thead > tr:last-child > &:first-child { border-bottom-left-radius: 0; }
  tr:last-child > & { border-bottom-width: 0; }
  thead > tr:last-child > & { border-bottom-width: 1px; }
}

td {
  border-bottom: 1px solid $boxBorderLight;

  + td { border-left: 1px solid $boxBorderLight; }
  tr:last-child > & { border-bottom: 0; }

  > pre:only-child, > p:only-child, > ul:only-child, > ol:only-child {
    margin-top: 0;
    margin-bottom: 0;
  }
  > pre:last-child, > p:last-child, > ul:last-child, > ol:last-child { margin-bottom: 0; }
}

input {
  margin: 0;
  font-family: inherit;
  font-size: 100%;
  color: $textColor;
  line-height: normal;
  @extend %border-box;
}

input[type="search"] { -webkit-appearance: none; }

input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

::-ms-clear { display: none; }

::-moz-focus-inner {
  padding: 0 !important;
  border: 0 !important;
}

::-webkit-input-placeholder { color: $textColorLighter; }
::-moz-placeholder          { color: $textColorLighter; opacity: 1; }
:-ms-input-placeholder      { color: $textColorLighter; }