_github-markdown.scss

// ==============================================================================
//                        GitHub Markdown by sindresorhus                        
// ==============================================================================
// Adaptation work by Tristano Ajmone, 2017/11/20.
// 
// This file was ported to Sass scss from the GitHub Markdown CSS project:
// 
// -- https://github.com/sindresorhus/github-markdown-css/blob/f7cd505/github-markdown.css
// 
// GitHub Markdown CSS, by Sindre Sorhus, released under The MIT License (MIT):
// Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
// 
// Parts of code from the Primer project were also reused and adapted here:
// -- https://github.com/primer/primer
// -- http://primercss.io
// 
// Primer (aka "Primer CSS"), by GitHub Inc., released under The MIT License (MIT):
// Copyright (c) 2017 GitHub Inc.
// ==============================================================================

// NOTE: I've done lots of cleaning-up here! The original CSS file by Sindre Sorhus
//       was automatically generated by extracting the actual CSS stylesheet from
//       GitHub content preview pages (which in turn is auto-generated from Primer).
//       Therefore, there were lots of redundant definitions, or values-orvverrides.
//       I've tried to simplify the whole thing in order to take advantage of Sass'
//       rules-nesting feature, which provides a much cleaner source to work on.
//       The main goal here is to make this stylesheet easy to maintain, and not
//       to replicate 100% how GitHub styles its contents preveiwes -- we only
//       aim to provide a GitHubbish look-&-feel, not 100% accuracy!

// -- Definitions for the same tags were dispersed all over the place, I've tried
//    to gather them all together, in one place, and nest them.
// -- When conflicting values were found, I've peeked at which rules takes over
//    in the actual browser, and discareded the overriden rule.
// -- I've removed all references to the "octicons-link" -- was supposed to mimick
//    the chain link icon on Headers, but it's no use to use because we use this
//    sytlesheet with pandoc (which doesn't provide <a> anchors).


.markdown-body {
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  line-height: 1.5;
  color: #24292e;
  font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-size: 16px;
  line-height: 1.5;
  word-wrap: break-word;
  box-sizing: border-box;
  min-width: 200px;
  max-width: 980px;
  margin: 0 auto;
  padding: 45px;
    
  a {
    color: #0366d6;
    background-color: transparent;
    text-decoration: none;
    -webkit-text-decoration-skip: objects;

    &:active,
    &:hover {
      outline-width: 0;
    }
    &:hover {
      text-decoration: underline;
    }
    &:not([href]) {
      color: inherit;
      text-decoration: none;
    }
  }

  strong {
    font-weight: 600;
  }

  // ------------------------------------------------------------------------------
  //                                    Headings                                   
  // ------------------------------------------------------------------------------
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.25;
  }

  h1 {
    font-size: 2em;
    margin: 0.67em 0;
    padding-bottom: 0.3em;
    border-bottom: 1px solid #eaecef;
  }

  h2 {
    padding-bottom: 0.3em;
    font-size: 1.5em;
    border-bottom: 1px solid #eaecef;
  }

  h3 {
    font-size: 1.25em;
  }

  h4 {
    font-size: 1em;
  }

  h5 {
    font-size: 0.875em;
  }

  h6 {
    font-size: 0.85em;
    color: #6a737d;
  }

  // ------------------------------------------------------------------------------

  img {
    border-style: none;
  }

  svg:not(:root) {
    overflow: hidden;
  }

  code,
  kbd,
  pre {
    font-family: monospace, monospace;
    font-size: 1em;
  }

  hr {
    box-sizing: content-box;
    height: 0.25em;
    margin: 24px 0;
    padding: 0;
    overflow: hidden;
    background-color: #e1e4e8;
    border: 0;

    &::before {
    display: table;
    content: "";
    }

    &::after {
    display: table;
    clear: both;
    content: "";
    }
  }

  input {
    margin: 0;
    overflow: visible;
    font: inherit;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
  }

  [type="checkbox"] {
    box-sizing: border-box;
    padding: 0;
  }

  * {
    box-sizing: border-box;
  }




  p {
    margin-top: 0;
    margin-bottom: 10px;
  }

  blockquote {
    margin: 0;
  }

  // ------------------------------------------------------------------------------
  //                                     Lists                                     
  // ------------------------------------------------------------------------------
  ul,
  ol {
    padding-left: 2em;
    margin-top: 0;
    margin-bottom: 0;

    ol {
      list-style-type: lower-roman;
    }

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

    ul ol,
    ol ol {
      list-style-type: lower-alpha;
    }
 }

  li>p {
    margin-top: 16px;
  }

  li+li {
    margin-top: 0.25em;
  }

  // ------------------------------------------------------------------------------
  //                               Description Lists                               
  // ------------------------------------------------------------------------------

  dd {
    margin-left: 0;
  }

  dl {
    padding: 0;

    & dt {
      padding: 0;
      margin-top: 16px;
      font-size: 1em;
      font-style: italic;
      font-weight: 600;
    }

    & dd {
      padding: 0 16px;
      margin-bottom: 16px;
    }
  }


  // ------------------------------------------------------------------------------

  code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    font-size: 12px;
  }

  pre {
    margin-top: 0;
    margin-bottom: 0;
    font: 12px "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  }


  // ------------------------------------------------------------------------------

  p,
  blockquote,
  ul,
  ol,
  dl,
  table,
  pre {
    margin-top: 0;
    margin-bottom: 16px;
  }



  blockquote {
    padding: 0 1em;
    color: #6a737d;
    border-left: 0.25em solid #dfe2e5;

    &>:first-child {
      margin-top: 0;
    }

    &>:last-child {
      margin-bottom: 0;
    }
  }


  kbd {
    display: inline-block;
    padding: 3px 5px;
    font-size: 11px;
    line-height: 10px;
    color: #444d56;
    vertical-align: middle;
    background-color: #fafbfc;
    border: solid 1px #c6cbd1;
    border-bottom-color: #959da5;
    border-radius: 3px;
    box-shadow: inset 0 -1px 0 #959da5;
  }







  // ------------------------------------------------------------------------------
  //                                     Tables                                    
  // ------------------------------------------------------------------------------
  table {
    display: block;
    width: 100%;
    overflow: auto;
    border-spacing: 0;
    border-collapse: collapse;

    & th {
      font-weight: 600;
    }

    & th,
    & td {
      padding: 6px 13px;
      border: 1px solid #dfe2e5;
    }

    & tr {
      background-color: #fff;
      border-top: 1px solid #c6cbd1;

      &:nth-child(2n) {
        background-color: #f6f8fa;
      }
    }


  }


  // ------------------------------------------------------------------------------

  img {
    max-width: 100%;
    box-sizing: content-box;
    background-color: #fff;
  }


  code {
    padding: 0;
    padding-top: 0.2em;
    padding-bottom: 0.2em;
    margin: 0;
    font-size: 85%;
    background-color: rgba(27,31,35,0.05);
    border-radius: 3px;
  }

  code::before,
  code::after {
    letter-spacing: -0.2em;
    content: "\00a0";
  }

  pre {
    word-wrap: normal;
  }

  pre>code {
    padding: 0;
    margin: 0;
    font-size: 100%;
    word-break: normal;
    white-space: pre;
    background: transparent;
    border: 0;
  }

  .highlight {
    margin-bottom: 16px;
  }

  .highlight pre {
    margin-bottom: 0;
    word-break: normal;
  }

  .highlight pre,
  pre {
    padding: 16px;
    overflow: auto;
    font-size: 85%;
    line-height: 1.45;
    background-color: #f6f8fa;
    border-radius: 3px;
  }

  pre code {
    display: inline;
    max-width: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    line-height: inherit;
    word-wrap: normal;
    background-color: transparent;
    border: 0;
  }

  pre code::before,
  pre code::after {
    content: normal;
  }

  .full-commit .btn-outline:not(:disabled):hover {
    color: #005cc5;
    border-color: #005cc5;
  }

  kbd {
    display: inline-block;
    padding: 3px 5px;
    font: 11px "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    line-height: 10px;
    color: #444d56;
    vertical-align: middle;
    background-color: #fcfcfc;
    border: solid 1px #c6cbd1;
    border-bottom-color: #959da5;
    border-radius: 3px;
    box-shadow: inset 0 -1px 0 #959da5;
  }

  // ------------------------------------------------------------------------------
  //                                   Task-Lists                                  
  // ------------------------------------------------------------------------------
  :checked+.radio-label {
    position: relative;
    z-index: 1;
    border-color: #0366d6;
  }

  .task-list-item {
    list-style-type: none;
    
    &+.task-list-item {
      margin-top: 3px;
    }

    & input {
      margin: 0 0.2em 0.25em -1.6em;
      vertical-align: middle;
    }
  }

  // ------------------------------------------------------------------------------
  //                                 .markdown-body                                
  // ------------------------------------------------------------------------------

  // .markdown-body::before
  &::before {
    display: table;
    content: "";
  }

  // .markdown-body::after
  &::after {
    display: table;
    clear: both;
    content: "";
  }

  // .markdown-body >*:first-child
  &>*:first-child {
    margin-top: 0 !important;
  }

  // .markdown-body >*:child
  &>*:last-child {
    margin-bottom: 0 !important;
  }
}