body {
    /* background: url(../img/f7.jpg); */
    object-fit: cover;
    background-size: cover;
    background-position: top;
    background-repeat: no-repeat;
    /* min-width: 480px; */
    background-color: #4e4b4b;
  }
  h2{
    text-align: center;
    color: #000000;
  }
  ul{
    list-style: none;
    color: #000000;
    text-align: center;
  }
  a{
    text-decoration: none;
    color: #000000;
    font-size: 30px;
  }
  a:hover{
    color: #daa520
  }
  #cas{
    color: #000000;
  }
  #cas:hover{
    color: #daa520;
  }
 
  .volt{
    margin-top: 10%;
    text-align: center;
  }