a {
    color: black;
    text-decoration: none;
  }
  #active {
    color: red;
  }
  h1 {
    font-size: 45px;
    text-align: center;
    border-bottom: 1px solid gray;
    margin: 0;
    padding: 20px;
  }
  #gr ol {
      border-right: 1px solid gray;
      width: 100px;
      margin: 0;
      padding: 20px;
      padding-left: 33px;
  }
  #article{
      padding: 22px;
  }
  #gr {
    display: grid;
    grid-template-columns: 150px 1fr;
  }
  @media (max-width:750px) {
    #gr {
    display: block;
  }
  #gr ol {
      border-right: none;
  }
  h1 {
    border-bottom: none;
  }
}