body {
  padding: 0;
  margin: 0;
  color: green;
  background-color: #fde17b;
}

.header {
  padding-top: 20;
  padding-bottom: 10;
  color: blue;
  background-color: #e78587;
}

a {
  color: #4aff00;
  text-decoration: none;
}

nav {
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

nav ul {
    width: 900px;
    height: 50px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

nav ul li {
      list-style-type: none;
      width: 150px;
      float: left;
      text-align: center;
}

li a {
      text-decoration: none;
      color: white;
      line-height: 50px;
      display: block;
}

.hover a:hover {
      background-color: #ff7b00;
      color: white;
}

.divider {
      padding: 0;
      margin: 0;
      background: purple;
}

.big {
      height: 8;
}

.small {
      height: 3;
}

.section {
      color: purple;
      text-align: center;
      padding-bottom: 0;
      border: 1px solid rgba(23, 23, 23, 1);
      background: white;
      padding: 20;
      margin: 20;
}

.subsection {
      border: 2px solid rgba(23, 23, 23, 1);
      border-radius: 10px;
      margin: 10;
      padding-left: 50;
      padding-right: 50;
}

#author {
    text-align: center;
    margin: 0;
}