sizutekipage/src/style.css

body {
  background: #000;
  color: #fff;
  margin: 0;
}

a {
  color: #666;
}

.menu {
  background: #444;
  font-size: 14px;
  padding: 8px;
  margin-bottom: 12px;
}

.menu > a {
  color: #ea44fb;
}

.container {
  background: #00f;
  border: 1px solid #77a;
  margin: auto;
  width: 100%;
  max-width: 1200px;
  padding: 4px;
}

.active {
  background: #ea44fb;
  color: #000 !important;
  padding: 4px;
}