Github Markdown Stylesheet

github.css

/*
Copyright (c) 2017 Chris Patuzzo
https://twitter.com/chrispatuzzo

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

body {
  font-family: Helvetica, arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  padding-top: 10px;
  padding-bottom: 10px;
  background-color: white;
  padding: 30px;
  color: #333;
}

body > *:first-child {
  margin-top: 0 !important;
}

body > *:last-child {
  margin-bottom: 0 !important;
}

a {
  color: #4183C4;
  text-decoration: none;
}

a.absent {
  color: #cc0000;
}

a.anchor {
  display: block;
  padding-left: 30px;
  margin-left: -30px;
  cursor: pointer;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
}

h1, h2, h3, h4, h5, h6 {
  margin: 20px 0 10px;
  padding: 0;
  font-weight: bold;
  -webkit-font-smoothing: antialiased;
  cursor: text;
  position: relative;
}

h2:first-child, h1:first-child, h1:first-child + h2, h3:first-child, h4:first-child, h5:first-child, h6:first-child {
  margin-top: 0;
  padding-top: 0;
}

h1:hover a.anchor, h2:hover a.anchor, h3:hover a.anchor, h4:hover a.anchor, h5:hover a.anchor, h6:hover a.anchor {
  text-decoration: none;
}

h1 tt, h1 code {
  font-size: inherit;
}

h2 tt, h2 code {
  font-size: inherit;
}

h3 tt, h3 code {
  font-size: inherit;
}

h4 tt, h4 code {
  font-size: inherit;
}

h5 tt, h5 code {
  font-size: inherit;
}

h6 tt, h6 code {
  font-size: inherit;
}

h1 {
  font-size: 28px;
  color: black;
}

h2 {
  font-size: 24px;
  border-bottom: 1px solid #cccccc;
  color: black;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 16px;
}

h5 {
  font-size: 14px;
}

h6 {
  color: #777777;
  font-size: 14px;
}

p, blockquote, ul, ol, dl, li, table, pre {
  margin: 15px 0;
}

hr {
  border: 0 none;
  color: #cccccc;
  height: 4px;
  padding: 0;
}

body > h2:first-child {
  margin-top: 0;
  padding-top: 0;
}

body > h1:first-child {
  margin-top: 0;
  padding-top: 0;
}

body > h1:first-child + h2 {
  margin-top: 0;
  padding-top: 0;
}

body > h3:first-child, body > h4:first-child, body > h5:first-child, body > h6:first-child {
  margin-top: 0;
  padding-top: 0;
}

a:first-child h1, a:first-child h2, a:first-child h3, a:first-child h4, a:first-child h5, a:first-child h6 {
  margin-top: 0;
  padding-top: 0;
}

h1 p, h2 p, h3 p, h4 p, h5 p, h6 p {
  margin-top: 0;
}

li p.first {
  display: inline-block;
}

ul, ol {
  padding-left: 30px;
}

ul :first-child, ol :first-child {
  margin-top: 0;
}

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

dl {
  padding: 0;
}

dl dt {
  font-size: 14px;
  font-weight: bold;
  font-style: italic;
  padding: 0;
  margin: 15px 0 5px;
}

dl dt:first-child {
  padding: 0;
}

dl dt > :first-child {
  margin-top: 0;
}

dl dt > :last-child {
  margin-bottom: 0;
}

dl dd {
  margin: 0 0 15px;
  padding: 0 15px;
}

dl dd > :first-child {
  margin-top: 0;
}

dl dd > :last-child {
  margin-bottom: 0;
}

blockquote {
  border-left: 4px solid #dddddd;
  padding: 0 15px;
  color: #777777;
}

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

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

table {
  padding: 0;
}
table tr {
  border-top: 1px solid #cccccc;
  background-color: white;
  margin: 0;
  padding: 0;
}

table tr:nth-child(2n) {
  background-color: #f8f8f8;
}

table tr th {
  font-weight: bold;
  border: 1px solid #cccccc;
  text-align: left;
  margin: 0;
  padding: 6px 13px;
}

table tr td {
  border: 1px solid #cccccc;
  text-align: left;
  margin: 0;
  padding: 6px 13px;
}

table tr th :first-child, table tr td :first-child {
  margin-top: 0;
}

table tr th :last-child, table tr td :last-child {
  margin-bottom: 0;
}

img {
  max-width: 100%;
}

span.frame {
  display: block;
  overflow: hidden;
}

span.frame > span {
  border: 1px solid #dddddd;
  display: block;
  float: left;
  overflow: hidden;
  margin: 13px 0 0;
  padding: 7px;
  width: auto;
}

span.frame span img {
  display: block;
  float: left;
}

span.frame span span {
  clear: both;
  color: #333333;
  display: block;
  padding: 5px 0 0;
}

span.align-center {
  display: block;
  overflow: hidden;
  clear: both;
}

span.align-center > span {
  display: block;
  overflow: hidden;
  margin: 13px auto 0;
  text-align: center;
}

span.align-center span img {
  margin: 0 auto;
  text-align: center;
}

span.align-right {
  display: block;
  overflow: hidden;
  clear: both;
}

span.align-right > span {
  display: block;
  overflow: hidden;
  margin: 13px 0 0;
  text-align: right;
}

span.align-right span img {
  margin: 0;
  text-align: right;
}

span.float-left {
  display: block;
  margin-right: 13px;
  overflow: hidden;
  float: left;
}

span.float-left span {
  margin: 13px 0 0;
}

span.float-right {
  display: block;
  margin-left: 13px;
  overflow: hidden;
  float: right;
}

span.float-right > span {
  display: block;
  overflow: hidden;
  margin: 13px auto 0;
  text-align: right;
}

code, tt {
  margin: 0 2px;
  padding: 0 5px;
  white-space: nowrap;
  border: 1px solid #eaeaea;
  background-color: #f8f8f8;
  border-radius: 3px;
}

pre code {
  margin: 0;
  padding: 0;
  white-space: pre;
  border: none;
  background: transparent;
}

.highlight pre {
  background-color: #f8f8f8;
  border: 1px solid #cccccc;
  font-size: 13px;
  line-height: 19px;
  overflow: auto;
  padding: 6px 10px;
  border-radius: 3px;
}

pre {
  background-color: #f8f8f8;
  border: 1px solid #cccccc;
  font-size: 13px;
  line-height: 19px;
  overflow: auto;
  padding: 6px 10px;
  border-radius: 3px;
}

pre code, pre tt {
  background-color: transparent;
  border: none;
}

Can anyone explain me how this style works on github. Or even if it works at all. I'm finding answers that says that css styling like this can not be done on github, see this.
Personally, I've tried it several times already, never being able to do such a thing, but I'd love to.

Awesome!

@tuzz: Is there any possible way to implement these stylesheets into README.md markdown so it shows on GitHub? Just including the .css in <link href> in the markdown doesn't seem to work on GitHub.

@davincif what are you trying to do? The purpose of this is to emulate the CSS used within the markdown viewer and wiki pages. It's meant to be used elsewhere.

@tuzz that's not how it works. If you want to change how you see github readmes, you can add an adjusted version of this to a browser plugin like Stylebot. If you're trying to change how everyone sees your readme, you're out of luck. You may be able to edit inline styling, but that's probably it. Read the Markdown documentation and Github's Markdown documentation for more on what's allowed within markdown.

This is the original css that uses Github https://primer.style/css/getting-started
😄

This scrolls pres horizontally bad for me, the code overlaps and sticks out the edge of the pre and the pre moves inside of the div, not the code inside of the pre

@tuzz Thanks for publishing this:
I've reused your style sheet in a Windows batch script that converts a Markdown file to HTML, and displays it in a Web browser.
The batch is described here: https://www.dostips.com/forum/viewtopic.php?f=3&t=9372
And it is available there: https://github.com/JFLarvoire/SysToolsLib/blob/master/Batch/md2h.bat

For just wanting something that looks good enough to not have someone bother you about it, this plus Markdown is perfect.

I am glad to announce that this style sheet is used in my tiny humble project at https://github.com/ildar-shaimordanov/git-markdown-html.

Thanks!

I wish I was as skilled in CSS 😂