body {
  text-align: center;
  background-color: #373167;
}

#title {
  font-family: 'Chakra Petch', cursive;
  font-size: 4rem;
  color: #ffffff;
}

#instruction {
  font-family: 'Chakra Petch', cursive;
  font-size: 1.5rem;
  color: #ffffff;
}

#level-title {
  font-family: 'Chakra Petch', cursive;
  font-size: 1.5rem;
  color: #09ff00;
}

.container {
  display: block;
  width: 50%;
  margin: auto;
}

.btn {
  margin: 30px;
  display: inline-block;
  height: 150px;
  width: 150px;
  border: 8px solid black;
  border-radius: 50%;
}

.colour1 {
  background-color: turquoise;
}

.colour2 {
  background-color: rgb(255, 0, 136);
}

.colour3 {
  background-color: violet;
}

.colour4 {
  background-color: rgb(0, 94, 255);
}

.pressed {
  box-shadow: 0 0 20px white;
  background-color: grey;
}