body {
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    margin: 0px;
  }

  header {
    background-color: rgb(72, 88, 74);
    color: white;
    padding: 20px;
  }

  header ul {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-left: 0px;
    margin: 0px;
  }

  header h1 {
    font-size: 2em;
  }

  header img {
    width: 40%;
    display: block;
    margin-left: auto;
    margin-right: auto;
  }

  header h2 {
    font-size: 1.5em;
  }

  header a {
    padding: 3px 6px;
    color: white;
    text-decoration: none;
    border-style: solid;
    border-color: white;
    border-width: 1px;
  }

  header a:hover {
    color: rgb(71, 81, 72);
    background-color: white;
  }

  nav ul {
    list-style: none;
    display: flex;
  }

  nav li {
    margin-right: 20px;
  }

  nav a {
    color: #333;
    text-decoration: none;
  }

  a:hover {
    color: #00b8d4;
  }

  main {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
  }

  main ul {
    list-style: none;
    display: contents;
  }

  main a {
    color: #333;
    text-decoration: none;
    font-size: 105%;
    line-height: 130%;
  }

  main p {
    color: #333;
    line-height: 130%;
  }

  main h2 {
    color: #333;
  }

  main img {
    width: 100%;
    height: auto;
  }

  section h2 {
    font-size: 1.75em;
  }

  footer {
    background-color: rgb(72, 88, 74);
    color: white;
    text-align: center;
    padding-bottom: 20px;
    padding-top: 5px;
  }

  footer ul{
    display: inline-flex;
    list-style: none;
  }

  footer li {
    margin-right: 20px;
    line-height: 130%;
  }

  .container {
    display: inline-block;
    cursor: pointer;
    display: none;
  }

  .bar1 {
    width: 35px;
    height: 5px;
    background-color: #333;
    margin-top: 30px;
    transition: 0.4s;
    margin-left: 20px;
    margin-bottom: 6px;
  }
  
  .bar2, .bar3 {
    width: 35px;
    height: 5px;
    background-color: #333;
    margin: 6px 0;
    transition: 0.4s;
    margin-left: 20px;
  }

  .change .bar1 {
    transform: translate(0, 11px) rotate(-45deg);
  }
  
  .change .bar2 {opacity: 0;}
  
  .change .bar3 {
    transform: translate(0, -11px) rotate(45deg);
  }

  @media screen and (max-width: 500px) {
    header ul {
      display: inline-block;
    }

    header img {
      width: 100%;
      min-width: none;
    }

    nav ul {
      display: none;
    }

    main {
      padding-top: 5px;
    }

    .container {
      display: contents;
    }

    .change ul {
      display: block;
    }

    footer ul {
      display: inline-block;
    }
  }

  @media screen and (max-width: 900px) {
    nav ul {
      padding-left: 20px;
    }
  }

  @media screen and (min-width: 501px) {
    header img {
      min-width: 450px;
    }
  }

  @media screen and (max-height: 400px) {
    header img {
      display: none;
    }
  }