zoebat-website/styles/button.css

.imageButton:hover img,
.imageButton:focus img {
  animation: 700ms hoverAnimation forwards;
}

.imageButton img {
  transition: all 50ms;
}

@keyframes hoverAnimation {
  0% {
    transform: rotate(0deg) scale(1);
  }

  1% {
    transform: rotate(40deg) scale(2.1, 1.1);
  }
  20% {
    transform: rotate(-20deg) scale(1.1, 2.1);
  }
  60% {
    transform: rotate(10deg) scale(1.7, 1.5);
  }
  70% {
    transform: rotate(-5deg) scale(1.4, 1.6);
  }
  80% {
    transform: rotate(4deg) scale(1.6, 1.4);
  }

  90% {
    transform: scale(1.4, 1.6);
  }

  100% {
    transform: rotate(0deg) scale(1.5);
  }
}

.bouncy:focus,
.bouncy:hover {
  border-bottom: inset;
  animation: 700ms borderBounce forwards;
  border-radius: 0px;
}

@keyframes borderBounce {
  0% {
    border-bottom-width: 0px;
  }
  10% {
    border-bottom-width: 24px;
  }

  40% {
    border-bottom-width: 2px;
  }

  60% {
    border-bottom-width: 15px;
  }

  70% {
    border-bottom-width: 7px;
  }
  80% {
    border-bottom-width: 13;
  }
  100% {
    border-bottom-width: 10px;
  }
}