* {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

h1, h2 {
  font-family: Helvetica;
  text-align: center;
}

textarea {
  border: 1px solid #202020;
  height: 200px;
  padding: 5px;
  width: 100%;
  -moz-border-radius: 2px;
  -webkit-border-radius: 2px;
  border-radius: 2px;
}

article {
  display: none;
}

pre {
  background-color: #16a085;
  color: #fff;
  line-height: 1.2;
  padding: 10px;
  -moz-border-radius: 2px;
  -webkit-border-radius: 2px;
  border-radius: 2px;
}

#article {
  font-family: Arial, Helvetica, sans-serif;
  padding: 10% 10% 0;
}