style.css

html,
body {
  height: 100%;
  width: 100%;
  background-color: #333;
}

body {
  color: #ccc;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.main-content {
  width: 100%;
}

.header {
  margin-bottom: 1rem;
}

.title,
.label {
  color: #ccc;
}

.logo {
  margin-right: 0.5rem;
}

.footer {
  background-color: #333;
  padding-top: 0;
  padding-bottom: 0;
}

strong {
  color: #fff;
}

pre {
  color: #666;
  background-color: #333;
}

.screen {
  width: 100%;
  height: 100%;
}

#legends {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
}

.legend {
  margin: 10px;
  display: flex;
  flex-direction: row;
  align-items: center;
}

.legend-color {
  margin-right: 8px;
  width: 1rem;
  height: 1rem;
  background-color: white;
}

.justify-center {
  justify-content: center;
}

.justify-center > *:not(:first-child) {
  margin-left: 80px;
}

a:hover {
  color: inherit;
  text-decoration: underline;
}