* {
    box-sizing: border-box;
  }
  

  body {
    font-family: Arial;
    padding: 20px;
    background: #f1f1f1;
  }
  

  .header {
    padding: 30px;
    font-size: 40px;
    text-align: center;
    background: white;
  }
  

  


  .img {
    background-color: #aaa;
    width: 100%;
    padding: 20px;
  }
  

  .card {
     background-color: white;
     padding: 20px;
     margin-top: 20px;
  }
  

  @media screen and (max-width: 800px) {
    .leftcolumn, .rightcolumn {   
      width: 100%;
      padding: 0;
    }
  }


  .Directory{width: 100px; 
    height: 100px; 
    padding: 0.5em;
     float: left; 
     margin: 10px 10px 10px 0; 
     outline: auto;
    text-align: center;
    outline-color: black;
    }