body {
  font-family: "Open Sans","Helvetica", "Arial", sans-serif;
 background-color: #fafafa;
}

section {
  margin-bottom: 20px;
  margin-right: 2.5%;
  margin-left: 2.5%;
  margin-top: 20px;
  padding: 0;
    font-size: 20px;
}

section p,
section pre {
  margin-left: 120px;
}

section pre {
  background: rgba(0,0,0,0.1);
  padding: 10px;
  border-radius: 3px
}

h2 {
  margin: 0 0 10px 0;
}


.example {
  float: left;
  margin-right: 20px;
}

@media (min-width: 481px) {
  section {
    width: 45%;
    float: left;
  }
  section:nth-child(odd) {
    clear: both;
  }
}