Stylesheet for Makdown ala Github

github-readme.css

body {
    background: #fff;
    padding: 0 16px 32px;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  line-height: 1.5;
  color: #333;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-size: 16px;
  line-height: 1.5;
  word-wrap: break-word;
}

a {
  background-color: transparent;
  -webkit-text-decoration-skip: objects;
}

a:active,
a:hover {
  outline-width: 0;
}

strong {
  font-weight: inherit;
}

strong {
  font-weight: bolder;
}

h1 {
  font-size: 2em;
  margin: 0.67em 0;
}

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;
  overflow: visible;
}

input {
  font: inherit;
  margin: 0;
}

input {
  overflow: visible;
}

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

* {
  box-sizing: border-box;
}

input {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

a {
  color: #4078c0;
  text-decoration: none;
}

a:hover,
a:active {
  text-decoration: underline;
}

strong {
  font-weight: 600;
}

hr {
  height: 0;
  margin: 15px 0;
  overflow: hidden;
  background: transparent;
  border: 0;
  border-bottom: 1px solid #ddd;
}

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

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

table {
  border-spacing: 0;
  border-collapse: collapse;
}

td,
th {
  padding: 0;
}

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

h1 {
  font-size: 32px;
  font-weight: 600;
}

h2 {
  font-size: 24px;
  font-weight: 600;
}

h3 {
  font-size: 20px;
  font-weight: 600;
}

h4 {
  font-size: 16px;
  font-weight: 600;
}

h5 {
  font-size: 14px;
  font-weight: 600;
}

h6 {
  font-size: 12px;
  font-weight: 600;
}

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

blockquote {
  margin: 0;
}

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

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

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

dd {
  margin-left: 0;
}

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

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

input {
  -webkit-font-feature-settings: "liga" 0;
  font-feature-settings: "liga" 0;
}

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

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

a:not([href]) {
  color: inherit;
  text-decoration: none;
}

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

hr {
  height: 0.25em;
  padding: 0;
  margin: 24px 0;
  background-color: #e7e7e7;
  border: 0;
}

blockquote {
  padding: 0 1em;
  color: #777;
  border-left: 0.25em solid #ddd;
}

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

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

kbd {
  display: inline-block;
  padding: 3px 5px;
  font-size: 11px;
  line-height: 10px;
  color: #555;
  vertical-align: middle;
  background-color: #fcfcfc;
  border: solid 1px #ccc;
  border-bottom-color: #bbb;
  border-radius: 3px;
  box-shadow: inset 0 -1px 0 #bbb;
}

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

h1 {
  padding-bottom: 0.3em;
  font-size: 2em;
  border-bottom: 1px solid #eee;
}

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

h3 {
  font-size: 1.25em;
}

h4 {
  font-size: 1em;
}

h5 {
  font-size: 0.875em;
}

h6 {
  font-size: 0.85em;
  color: #777;
}

ul,
ol {
  padding-left: 2em;
}

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

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

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

dl {
  padding: 0;
}

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

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

table {
  display: block;
  width: 100%;
  overflow: auto;
}

table th {
  font-weight: bold;
}

table th,
table td {
  padding: 6px 13px;
  border: 1px solid #ddd;
}

table tr {
  background-color: #fff;
  border-top: 1px solid #ccc;
}

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

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(0,0,0,0.04);
  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;
}

pre {
  padding: 16px;
  overflow: auto;
  font-size: 85%;
  line-height: 1.45;
  background-color: #f7f7f7;
  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;
}
kbd {
  display: inline-block;
  padding: 3px 5px;
  font: 11px Consolas, "Liberation Mono", Menlo, Courier, monospace;
  line-height: 10px;
  color: #555;
  vertical-align: middle;
  background-color: #fcfcfc;
  border: solid 1px #ccc;
  border-bottom-color: #bbb;
  border-radius: 3px;
  box-shadow: inset 0 -1px 0 #bbb;
}

hr {
  border-bottom-color: #eee;
}