* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  body {
      background-color: #f8f8f8;
  }
  li {
    list-style: none;
  }
  i b {
      font-style: normal;
  }
  .contain {
    width: 12rem;
    margin: 0 auto;
  }
  a {
    text-decoration: none;
  }
  .clearfix::before,
  .clearfix::after {
    content: "";
    display: table;
    clear: both;
    zoom: 1;
  }