body {
    margin: 0;
    background: gray;
}

.content {
    max-width: 1500px;
    margin: auto;
    padding: 20px;
    background: white;
}

.nav {
    margin: 0;
    background-color: #7a7a7a;
}

.nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #7a7a7a;
}

.nav ul li {
  float: left;
}

.nav ul li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.nav ul li a:hover {
  background-color: #6e6e6e;
  color: black;
  font-weight: bold;
  text-decoration: none;
}

h2 {
    font-weight: bold;
}

.courseinfo {
    background-color: white;
}

.courseinfo ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}