body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  background: #f4f4f4;
  display: flex;
  justify-content: center;
  align-items: center;
}

#box {
  width: 80px;
  height: 80px;
  background-color: dodgerblue;
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 10px;
  transform: translate(-50%, -50%);
  transition: top 0.2s ease, left 0.2 ease;
  box-shadow: x 4px 10px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}