styles.css

body{
  background-color: #011F3F;
  text-align: center;
}

.heading{
  font-family: 'Press Start 2P', cursive;
  font-size: 2rem;
  color: #ECDBBA;
  margin: 70px 50px 70px;
}

button{
  display: inline-block;
  height: 200px;
  width: 200px;
  border: solid;
  border-radius: 35px;
  border-width: 8px;
  font-size: 2rem;
  margin: 30px;
}

.first,
.second{
  display: block;
}

.green{
  background-color: green;

}

.red{
  background-color: red;

}

.yellow{
  background-color: yellow;

}

.blue{
  background-color: blue;

}

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

.gameOver{
  background-color: red;

}
@media (max-width: 1100px) {
  body{
    text-align: center;
  }
  button,
  .first,
  .second{
    display: block;
    margin: 30px auto;
  }

}