h2 {
    font-weight: bold;
    font-size: 2rem;
  }
  p {
    font-size: 2rem;
  }
  .class-ul,.class-li{
    list-style:none;
  }
  .class-ul{
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }
  .class-ul .class-li .class-a{
    text-decoration:none;
    color:#000;
    background:#ffc;
    display:block;
    height:13em;
    width:13em;
    padding:1em;
    box-shadow: 5px 5px 7px rgba(33,33,33,.7);
    transform: rotate(-6deg);
    transition: transform .15s linear;
  }
  
  .class-ul .class-li:nth-child(even) .class-a{
    transform:rotate(4deg);
    position:relative;
    top:5px;
    background:#cfc;
  }
  .class-ul .class-li:nth-child(3n) .class-a{
    transform:rotate(-3deg);
    position:relative;
    top:-5px;
    background:#ccf;
  }
  .class-ul .class-li:nth-child(5n) .class-a{
    transform:rotate(5deg);
    position:relative;
    top:-10px;
  }
  
  .class-ul .class-li .class-a:hover,ul li a:focus{
    box-shadow:10px 10px 7px rgba(0,0,0,.7);
    transform: scale(1.25);
    position:relative;
    z-index:5;
  }
  
  .class-ul .class-li{
    margin:1em;
  }