* {
    box-sizing: border-box;
  }
  
  
  /* Create three columns of equal width */
  .columns {
    float: left;
    width: 33.33%;
    height: 33.33%;
    padding: 18px;
    list-style: none;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
  }
  
  /* Style the list */
  .price {
    list-style-type: none;
    border: 1px solid #eee;
    background-color: #fff;
    margin: 0px;
    padding: 0;
    -webkit-transition: 0.3s;
    transition: 0.3s;
  }
  
  /* Add shadows on hover */
  .price:hover {
    box-shadow: 5px 8px 8px 0px rgba(0, 0, 0, 0.5)
  }
  
  /* Pricing header */
  .price .header {
    background-color: #fff;
    color: #ffffff;
    font-size: 25px;
  }
  
  /* List items */
  .price li {
    border-bottom: 1px solid #eee;
    padding: 20px;
    text-align: center;
    
  }
  
  /* Grey list item */
  .price .grey {
    background-color: #fff;
    font-size: 20px;
  }
  
  /* Change the width of the three columns to 100%
  (to stack horizontally on small screens) */
  @media only screen and (max-width: 600px) {
    .columns {
      width: 100%;
    }
    
  }
  /* Centraliza os icones no header*/
  .icone {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 40%;
  }