body {
  display: flex;
  justify-content: center;
  align-items: center;
}

.burger {
  width: 6rem;
  padding: 0.5rem;
  background-color: transparent;
  border: none;
}

.burger:hover .top-bun{
    animation: open-top 0.7s ease-in-out forwards,
               rotate 0.7s linear forwards infinite;
}

.burger:hover .tomato{
    animation: tilt 0.7s ease-in-out forwards infinite;
    margin-bottom: 0.4rem;
}

.burger:hover .patty{
    animation: tilt 0.7s ease-in-out forwards infinite;
    margin-top: 0.4rem;
}

.burger:hover .bottom-bun{
    animation: open-bottom 0.7s ease-in-out forwards;
}

.burger span {
  display: block;
  width: 100%;
  height: 2rem;
  border-radius: 0.8rem;
  transition: ease-in-out 0.3s;
  background-color: white;
}

.burger .top-bun {
  display: block;
  background-position: 0.5rem 0.5rem; 
  background-color: #eba300;
  position: relative;
  height: 2.1rem;
  border-radius: 9rem 9rem 0 0;
  content: '';
  background-image: radial-gradient(
    #FFE676 0%,
    #FFE676 6%,
    transparent 10%,
    transparent 100%
  );
  background-repeat: repeat;
  background-size: 1rem 1rem;
  background-position: center 0.8rem;
}

.burger .tomato {
  display: block;
  background-color:red;
  height: 0.3rem;
  width: 80%;
  margin: 0 auto;
  border-radius: 0;
}

.burger .patty {
  background-color: #a25a1a;
  width: 100%;
  height: 0.9rem;
}

.burger .bottom-bun {
  background-position: 0.5rem -3.5rem; 
  background-color: #eba300;
  border-radius: 0 0 1.7rem 1.7rem;
  height: 0.8rem;
}

.burger .cheese {
  display: block;
  background-color: #FFDD50;
  height:0.3rem;
  position: relative;
}

.burger .cheese::after {
  content: '';
  width: 0;
  height: 0;
  top: 100%;
  left:50%;
  position: absolute;
  border-left: 0.5rem solid transparent;
  border-right: 0.5rem solid transparent;
  border-top: 0.6rem solid #FFDD50;
  transform: translateX(-160%);
}

@keyframes open-top {
  0% {
    transform: translateY(0rem);
  }
  100% {
    transform: translateY(-0.4rem);
  }
}

@keyframes open-bottom {
    0% {
        transform: translateY(0rem);
    }
    100% {
        transform: translateY(0.4rem);
}
}

@keyframes tilt{
    0% {
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(3deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

@keyframes rotate{
    0% {
        background-position-x: 0rem;
    }
    100% {
        background-position-x: 2rem;
    }
}