* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
  }

  .header {
    padding: 20px;
    text-align: center;
  }

  .line {
    border: 2px solid black;
  }

  .column {
    text-align: center;
    float: left;
    width: 50%;
    padding: 15px;
  }