style.css

@charset "UTF-8";
body {
  font-family: "Helvetica Neue", Helvetica, Arial, Meiryo, "メイリオ", sans-serif;
  font-size: 16px;
  line-height: 1.5; }

h2 {
  border-bottom: 1px solid #ccc; }

h1, h2, h3 {
  margin-top: 28px;
  margin-bottom: 14px; }

h4, h5, h6 {
  margin-top: 14px;
  margin-bottom: 14px; }
  h4:before, h5:before, h6:before {
    content: "■"; }

p {
  margin-bottom: 12px; }

dd {
  margin-left: 3em; }

div.column {
  border: solid 3px;
  border-radius: 10px;
  padding-left: 1em;
  padding-right: 1em;
  margin-top: 12px;
  margin-bottom: 12px; }
  div.column h1, div.column h2, div.column h3 {
    margin-top: 14px; }

div.lead {
  font-size: 16px;
  margin-left: 3em; }

p.flushright {
  text-align: right; }

.noteref {
  vertical-align: super;
  font-size: smaller; }

p.footnote {
  font-size: 0.8em; }

.main-content {
  display: flex;
  flex-direction: column; }

div.footnote {
  order: 1; }

.image, .table, .caption-code, .cmd-code {
  margin-bottom: 12px; }

.image .caption, .table .caption {
  text-align: center; }

.image .caption {
  margin-top: 0; }
  .image .caption:before {
    content: "▲";
    color: lightgray; }

.caption-code .caption, .table .caption {
  margin-bottom: 0; }
  .caption-code .caption:before, .table .caption:before {
    content: "▼";
    color: lightgray; }

.image img {
  display: block;
  max-width: 100%;
  height: auto;
  margin-left: auto;
  margin-right: auto; }

.tb-header {
  background-image: url(images/html_header.jpg);
  background-size: cover;
  height: 20vw;
  background-color: #64C1D7;
  color: white;
  text-indent: 150%;
  overflow: hidden;
  white-space: nowrap; }

.tb-nav-link {
  margin-top: 1em;
  margin-bottom: 1em; }
  .tb-nav-link a.prev:before {
    content: "<<"; }
  .tb-nav-link a.next:after {
    content: ">>"; }

.tb-footer {
  margin-top: 16px;
  padding-top: 16px;
  padding-bottom: 16px;
  color: white;
  background-color: #424242; }
  .tb-footer a {
    color: #9e9e9e; }
  .tb-footer p {
    margin-right: 10px; }

.tb-footer-links li:nth-child(n+2)::before {
  color: #9e9e9e;
  content: "/";
  margin-right: 16px; }