Angular-Docs-Cn/aio/src/styles/2-modules/_code.scss

code-example,
code-tabs {
  clear: both;
  display: block;

  code {
    overflow: auto;
  }

  ol {
    list-style: decimal;
  }

  .mat-card {
    padding: 0;
    border-radius: 5px;
  }
}

code-example {
  &:not(.no-box) {
    background-color: rgba($backgroundgray, 0.2);
    border: 0.5px solid $lightgray;
    border-radius: 5px;
    color: $darkgray;
    margin: 16px auto;
  }

  &.no-box {
    pre.prettyprint {
      margin: 0;
    }

    code {
      background-color: transparent;
    }
  }

  code {
    overflow: auto;
  }

  // TERMINAL / SHELL TEXT STYLES
  &.code-shell, &[language=sh], &[language=bash] {
    background-color: $darkgray;
  }

  header {
    background-color: $accentblue;
    border-radius: 5px 5px 0 0;
    color: $offwhite;
    @include font-size(16);
    padding: 8px 16px;
  }
}

code-tabs {
  margin: 16px 0;

  .code-tab-group {
    .mat-tab-label {
      &:hover {
        background: rgba(black, 0.04);
      }
    }

    .mat-tab-body {
      overflow-y: hidden;

      .mat-tab-body-content {
        height: auto;
        transform: none;

        .fadeIn {
          animation: opacity 2s ease-in;
        }
      }
    }
  }
}

code-example.avoid header,
code-example.avoidFile header {
  border: 2px solid $anti-pattern;
  background: $anti-pattern;
}

code-example.avoid,
code-example.avoidFile,
code-tabs.avoid mat-tab-body,
code-tabs.avoidFile mat-tab-body {
  border: 0.5px solid $anti-pattern;
}

aio-code {
  pre.prettyprint {
    position: relative;
    display: flex;
    min-height: 32px;
    margin: 16px 24px;
    white-space: pre-wrap;
    align-items: center;

    code {
      a {
        color: inherit;
      }

      span {
        @include line-height(24);
      }

      ol.linenums {
        margin: 0;
        color: lighten($mediumgray, 25%);

        li {
          margin: 0;
          font-family: $code-font;
          font-size: 90%;
          @include line-height(24);

          &::marker {
            color: lighten($mediumgray, 25%);
          }
        }
      }

      .code-missing {
        color: $darkred;
      }
    }

    .copy-button {
      position: absolute;
      top: -7px;
      right: -19px;
      padding: 0;
      overflow: visible; // This is required for the button to be displayed correctly in IE11.

      color: $blue-grey-200;
      background-color: transparent;
      border: none;
      cursor: pointer;

      &:hover {
        color: $mediumgray;
      }
    }

    &.lang-sh, &.lang-bash {
      .copy-button {
        color: $mediumgray;

        &:hover {
          color: $lightgray;
        }
      }
    }
  }
}

.sidenav-content {
  code {
    a {
      color: $darkblue;
      font-size: inherit;
      font-weight: inherit;
    }
  }

  :not(h1):not(h2):not(h3):not(h4):not(h5):not(h6):not(pre) > code {
    background-color: rgba($lightgray, 0.5);
    border-radius: 4px;
    color: $deepgray;
    padding: 4px;
  }

  .page-guide-cheatsheet & {
    td:first-of-type,
    th {
      code {
        background-color: inherit;
        padding: 0;
        white-space: pre-wrap;
      }
    }
  }

  .code-anchor {
    cursor: pointer;
    text-decoration: none;
    font-size: inherit;

    &:hover {
      text-decoration: underline;
    }
  }
}

/* PRETTY PRINTING STYLES for prettify.js. */

/* The following class|color styles are derived from https://github.com/google/code-prettify/blob/master/src/prettify.css*/

/* SPAN elements with the classes below are added by prettyprint. */
.pln { color: #000 }  /* plain text */

@media screen {
  .str { color: #800 }  /* string content */
  .kwd { color: #00f }  /* a keyword */
  .com { color: #060 }  /* a comment */
  .typ { color: red }  /* a type name */
  .lit { color: #08c }  /* a literal value */
  /* punctuation, lisp open bracket, lisp close bracket */
  .pun, .opn, .clo { color: #660 }
  .tag { color: #008 }  /* a markup tag name */
  .atn { color: #606 }  /* a markup attribute name */
  .atv { color: #800 }  /* a markup attribute value */
  .dec, .var { color: #606 }  /* a declaration; a variable name */
  .fun { color: red }  /* a function name */
}

/* Use higher contrast and text-weight for printable form. */
@media print, projection {
  .str { color: #060 }
  .kwd { color: #006; font-weight: bold }
  .com { color: #600; font-style: italic }
  .typ { color: #404; font-weight: bold }
  .lit { color: #044 }
  .pun, .opn, .clo { color: #440 }
  .tag { color: #006; font-weight: bold }
  .atn { color: #404 }
  .atv { color: #060 }
}

/* SHELL / TERMINAL CODE BLOCKS */

code-example {
  &.code-shell, &[language=sh], &[language=bash] {
    .pnk, .blk, .pln, .otl, .kwd, .typ, .tag, .str, .atv, .atn, .com, .lit, .pun, .dec {
      color: $codegreen;
    }
  }
}