#title {
  text-align: left;
}

* {
  margin: 0;
  padding: 0;
  color: #FFF;
}

body {
  font-family: "Noto Sans JP", "Meiryo UI", "Meiryo", "メイリオ", "Yu Ghothic", "Yu Gothic UI", sans-serif, system-ui;
  width: 960px;
  margin: auto;
}

@media screen and (max-width: 960px) {

  html,
  body,
  header {
    width: 100%;
    box-sizing: border-box;
  }
}

a {
  text-decoration: none;
}

header {
  padding: 16px;
  background: #555;
}

body {
  background: #333;
}

main {
  padding: 30px;
}

main a {
  text-decoration: underline;
}

nav {
  margin-top: 1rem;
  display: block;
  text-align: center;
}

nav ul {
  list-style: none;
  display: flex;
  flex-direction: row;
}

nav li {
  display: block;
  flex: 1 0 auto;
}

nav li a {
  background: #444;
  padding: 0.5rem;
  display: block;
}

nav li a:hover {
  background: #222;
}

.section h2,
.section h3,
.section h4 {
  margin-top: 0.5rem;
}

.section {
  padding: 0.5rem;
  margin-bottom: 0.5rem;

}