.box {
    display: flex;
    font-family: Arial, Helvetica, sans-serif;
    color: black;
    width: 80vw;
    margin: auto;
  }

  .cont{
    width: 25vw;
    border-right: solid dashed green;
    margin-right: 2vw;
  }

  .cont > a{
    display: block;
    text-decoration: none;
    
  }

  .cont>hr{
    width: 70%;
    margin-left: 10%;
    
  }

  .art{
    width: 75vw;
    text-indent: 3ch;
    line-height:3ch;
    margin-right: 1vw;
  }

  .art>header{
    font-size: 3vw;
    margin: 2vw;
  }