* {
  box-sizing: border-box;
}

body {
  font-family: "Ubuntu Mono", monospace;
  min-height: 100vh;
  display: flex;
  font-size: 1.25vw;
}

.color {
  height: 100%;
  min-height: 100vh;
}

.level {
  display: flex;
  align-items: center;
  text-align: center;
  justify-content: center;
  height: calc(100vh / 15);
  width: calc(100vw / 19);
  text-align: center;
  cursor: pointer;
  transition: 300ms ease-in-out color;
  color: rgba(255, 255, 255, 0.54);
}
.level:hover {
  color: white;
}

footer {
  position: absolute;
  bottom: 0;
  right: 0;
  height: calc(100vh / 15 * 4);
  width: calc(100vw / 19 * 3);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1em;
}