style.css

* {
  box-sizing: border-box; }

body {
  width: 100vw;
  height: 100vh;
  overflow: auto; }

body {
  padding: 1em 2em 2em 17em;
  font-size: 16px;
  line-height: 1.6;
  font-family: 'Gotham', Gotham-Light; }

.toc {
  position: fixed;
  left: 3em;
  top: 5em;
  padding: 1em;
  width: 14em;
  line-height: 2; }
  .toc ul {
    list-style: none;
    padding: 0;
    margin: 0; }
  .toc ul ul {
    padding-left: 2em; }
  .toc li a {
    display: inline-block;
    color: #aaa;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1); }
  .toc li.visible > a {
    color: #111;
    transform: translate(5px); }

.toc-marker {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1; }
  .toc-marker path {
    transition: all 0.3s ease; }

.contents {
  padding: 1em;
  max-width: 800px;
  font-size: 1.2em;
  font-family: 'Frank Ruhl Libre', sans-serif; }
  .contents img {
    max-width: 100%; }
  .contents .code-block {
    white-space: pre;
    overflow: auto;
    max-width: 100%; }
    .contents .code-block code {
      display: block;
      background-color: #e8e3e3;
      padding: 10px; }
  .contents .code-inline {
    background-color: #e8e3e3;
    padding: 4px; }
  .contents h2
h3 {
    padding-top: 1em; }
  .contents h2 {
    margin-top: 1.2em; }

@media screen and (max-width: 1200px) {
  body {
    font-size: 12px; } }