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

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

.container {
  display: grid;
  place-items: center;
  grid-template-columns: 1fr 1fr;
  max-width: 767px;
  margin: 0 auto;
  gap: 10px;
width: 100%;
}

.btn {
  margin: 20px;
  display: inline-block;
  height: 200px;
  width: 200px;
  border: 5px solid #fff;
  border-radius: 2.5rem;
  cursor: pointer;
  box-shadow: inset 2px 2px 5px #aaa, inset -2px -2px 5px 
}

.game-over {
  background-color: red;
  opacity: 0.8;
}

.red {
  background: linear-gradient(rgb(255, 102, 0),rgb(168, 15, 15));
}
.red:hover {
   box-shadow: 0px 0px 5px #aaa,
  0 0 10px rgba(255, 102, 0, 0.6),
    0 0 15px rgba(255, 102, 0, 0.4);
  animation: shift 1s ease infinite;
  transform: scale(1.1);
  transition: 0.1s ease-in;
}

@keyframes shift {
  0% {
    background: linear-gradient(rgb(255, 102, 0), rgb(168, 15, 15));
  }
  50% {
    background: linear-gradient(rgb(168, 15, 15), rgb(255, 102, 0));
  }
  100% {
    background: linear-gradient(rgb(255, 102, 0), rgb(168, 15, 15));
  }
}



.green {
  background: linear-gradient(rgb(12, 145, 56),rgb(13, 53, 5));;
}
.green:hover{
  animation: shift2 1s ease infinite;
  transform: scale(1.1);
  transition: 0.1s ease-in;
}
@keyframes shift2 {
  0% {
    background: linear-gradient(rgb(12, 145, 56),rgb(13, 53, 5));
  }
  50% {
    background: linear-gradient(rgb(13, 53, 5), rgb(12, 145, 56));
  }
  100% {
    background: linear-gradient(rgb(12, 145, 56),rgb(13, 53, 5));
  }
}

.blue {
  background: linear-gradient(rgb(75, 75, 228),rgb(10, 10, 99));;
}
.blue:hover{
  animation: shift3 1s ease infinite;
  transform: scale(1.1);
  transition: 0.1s ease-in;
}
@keyframes shift3{
  0% {
    background: linear-gradient(rgb(75, 75, 228),rgb(10, 10, 99));
  }
  50% {
    background: linear-gradient(rgb(10, 10, 99), rgb(75, 75, 228));
  }
  100% {
    background: linear-gradient(rgb(75, 75, 228),rgb(10, 10, 99));
  }
}
.yellow {
  background: linear-gradient(rgb(204, 204, 126),rgb(124, 124, 20));
}
.yellow:hover {
  animation: shift4 1s ease infinite;
  transform: scale(1.1);
  transition: 0.1s ease-in;
}
@keyframes shift4{
  0% {
    background: linear-gradient(rgb(204, 204, 126),rgb(124, 124, 20));
  }
  50% {
    background: linear-gradient(rgb(124, 124, 20), rgb(204, 204, 126));
  }
  100% {
    background: linear-gradient(rgb(204, 204, 126),rgb(124, 124, 20));

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