Initial main.css for Indigo + Tyrian

main.css

* {
  box-sizing: border-box;
  font-family: monospace;
}

html, body {
  height: 100vh;
  padding: 0;
  margin: 0;
}

.main {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  background-color: black;
  height: 100vh;
  overflow: auto;
  position: relative;
  justify-content: center;
}

.game {
  flex-basis: 100%;
  text-align: center;
  padding: 2rem;
}

.counter {
  position: absolute;
  right: 2rem;
  top: 2rem;
  font-size: 3rem;
  font-weight: bold;
  color: white;
}

.btn {
  padding-bottom: 2rem;
}

.btn button {
  text-align: center;
  height: 2rem;
  font-size: 2rem;
  line-height: 0;
  padding: 2rem;
  background-color: green;
  border: 5px solid darkgreen;
}