body, html, h1, h2 {
  margin: 0;
  padding: 0;
  font-family: 'Roboto Slab', serif;
}

#header {
  background-color: #2d2d2d;
  color: white;
  text-align: center;
}

#description {
  margin: 20px;
  text-align: center;
  font-size: 20px;
}

.section-title {
  background-color: #2d2d2d;
  color: white;
  text-align: center;
}

.section {
  overflow: auto;
}

#footer {
  margin-top: 40px;
  padding-top: 40px;
  padding-bottom: 40px;
  font-size: 12px;
  line-height: 1.5;
  color: #777;
  border-top: 1px solid #eee;
  text-align: center;
}

.lazyload {
  background-color: black;
  display: inline-block;
}

.batman {
  float: left;
  width: 250px;
  height: 401px;
  margin: 10px;
}

.superman {
  float: right;
  width: 250px;
  height: 384px;
  margin: 10px;
}

.wonder-woman {
  float: left;
  width: 250px;
  height: 375px;
  margin: 10px;
}

.flash {
  float: right;
  width: 236px;
  height: 450px;
  margin: 10px;
}

.green-lantern {
  float: left;
  width: 250px;
  height: 336px;
  margin: 10px;
}

.martian-manhunter {
  float: right;
  width: 162px;
  height: 448px;
  margin: 10px;
}

.aquaman {
  float: left;
  width: 250px;
  height: 381px;
  margin: 10px;
}

#code-block {
  margin: 10px auto;
  width: 80%;
}

#code-block h3 {
  text-align: center;
}