body, html { margin: 0; padding: 0; height: 100%; }
section, article { display: block; padding: 0; }

body {
  font-family: 'Source Sans Pro', Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

article {
  max-width: 700px;
  padding: 30px 50px 100px 50px;
  background: white;
  z-index: 2;
  position: relative;
  min-height: 100%;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
}