body {
  margin: 0;
  padding: 0;

  width: 100%;
  height: 100vh;
  background-color: lightcoral;
}

.wrapper {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  top: 0;
  margin: auto;
  width: 480px;
  height: 60px;

  padding: 0;
  
}

.wrapper a {
  position: relative;
  display: inline-block;
  width: 100px;
  height: 100px;
  background-color: #fff;
  border-radius: 50%;

  cursor: pointer;
}

.wrapper a::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 80%;
  height: 80%;

  background-color: lightcoral;
  border-radius: 50%;

  transition: transform .5s;
}

.wrapper a:hover::before {
  transform: translate(-50%, -50%) scale(1);
}

.wrapper a + a {
  margin-left: 20px;
}