*{
  padding: 0;
  margin: 0;
}
body {
  text-align: center;
  background-color: #011F3F;
  font-family: 'Press Start 2P', cursive;
  color: #FEF2BF;
}
#level-title {
  font-size: 2.5rem;
  margin: 2.5%;
}
.btn {
  margin: 25px;
  display: inline-block;
  height: 200px;
  width: 200px;
  border: 10px solid black;
  border-radius: 20%;
}
.game-over {
  background-color: red;
  opacity: 0.8;
}
.red {
  background-color: red;
}
.green {
  background-color: green;
}
.blue {
  background-color: blue;
}
.yellow {
  background-color: yellow;
}
.pressed {
  box-shadow: 0 0 20px white;
  background-color: grey;
}
.Start {
  padding: 6px 25px;
  border: 2px solid white;
  background-color: brown;
  color: white;
  margin: 12px;
  border-radius: 15px;
  font-size: 1.3rem;
  cursor: pointer;
  letter-spacing: 0.18rem;
}
.Start:hover{
  background-color: red;
}