body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
  }

  h1 {
    text-align: center
  }

  h2 {
    text-align: center;
  }

  p {
    text-align: center;
  }

  a {
    display: block; text-align: center; color: blue
  }

  img {
    padding: 20px;
    margin: auto;
    display: block;
  }

  .header {
    padding: 35px;
    text-align: center;
    background-color: purple;
    color: white }

  .header h1 {
    font-size: 50px;
  }

  .navbar {
    overflow: hidden;
    background-color: gray;
  }

  .navbar a {
    display: block;
    color: white;
    float: left;
    text-decoration: none;
    padding: 10px;
  }

  .navbar a:hover {
    color: black
  }

  .rightfloatnavbar a {
    float: right;
  }

  .row {
    display: flex;
  }

  .side {
    flex: 30%;
    border-collapse: collapse;
    padding: 5px;
  }

  .main {
    flex: 70%;
    border-collapse: collapse;
  }

  @media screen and (max-width: 1000px) {.row {flex-direction: column;}}

  .side  {
    text-align: center;
  }

  .footer {
    padding: 20px;
    background-color: purple;
    color: white;
  }

  .side img {
    padding: 0px;
  }