img {
  max-width: 100%;
  max-height: 100%;
}
body {
  z-index: 5;
}
#background-container {
  opacity: 0.2;
  position: absolute;
  z-index: -1;
  pointer-events: none;
}
.monster {
  -webkit-animation: spin 1.1s infinite linear;
  margin: 8px;
}
.hi-im-goku {
  max-height: 240px;
  display: flex;
  justify-content: center;
  opacity: 0.5;
}
.goku {
  animation: wiggle 1.1s ease infinite;
  margin: 8px;
}
@keyframes wiggle {
  0% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(5deg);
  }
  50% {
    transform: rotate(-5deg);
  }
  75% {
    transform: rotate(5deg);
  }
  100% {
    transform: rotate(0deg);
  }
}

h1.wiggle {
  display: inline-block;
  animation: wiggle 2.5s infinite;
}
.monster-container {
  max-height: 160px;
  max-width: 160px;
  display: flex;
  justify-content: center;
}
.audio-container {
  margin-top: 1rem;
  max-height: 80px;
  max-width: 80px;
  cursor: pointer;
}

@-webkit-keyframes spin {
  0% {
    -webkit-transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
  }
}

body {
  margin: 0;
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    90deg,
    rgba(2, 0, 36, 1) 0%,
    rgba(9, 9, 121, 1) 35%,
    rgba(0, 212, 255, 1) 100%
  );
}