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

#level-title {
  font-family: 'Press Start 2P', cursive;
  font-size: 3rem;
  margin:  5%;
  color: #FEF2BF;
}

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

}

.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 button */
.button-30 {
  align-items: center;
  appearance: none;
  background-color: #fcfcfd;
  border-radius: 4px;
  border-width: 0;
  box-shadow: rgba(45, 35, 66, 0.4) 0 2px 4px,
    rgba(45, 35, 66, 0.3) 0 7px 13px -3px, #d6d6e7 0 -3px 0 inset;
  box-sizing: border-box;
  color: #36395a;
  cursor: pointer;
  display: inline-flex;
  font-family: "JetBrains Mono", monospace;
  height: 70px;
  width : 200px;
  justify-content: center;
  line-height: 1;
  list-style: none;
  overflow: hidden;
  padding-left: 16px;
  padding-right: 16px;
  position: relative;
  text-align: left;
  text-decoration: none;
  transition: box-shadow 0.15s, transform 0.15s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  white-space: nowrap;
  will-change: box-shadow, transform;
  font-size: 18px;
}

.button-30:focus {
  box-shadow: #d6d6e7 0 0 0 1.5px inset, rgba(45, 35, 66, 0.4) 0 2px 4px,
    rgba(45, 35, 66, 0.3) 0 7px 13px -3px, #d6d6e7 0 -3px 0 inset;
}

.button-30:hover {
  box-shadow: rgba(45, 35, 66, 0.4) 0 4px 8px,
    rgba(45, 35, 66, 0.3) 0 7px 13px -3px, #d6d6e7 0 -3px 0 inset;
  transform: translateY(-2px);
}

.button-30:active {
  box-shadow: #d6d6e7 0 3px 7px inset;
  transform: translateY(2px);
}