body {
  background-image: url(https://www.adam-butler.com/img/bg.jpg);
  background-attachment: fixed;
  background-size: cover;
}

#wrapper {
  max-width: 100%;

article {
  background-color: rgba(255,255,255,0.7);
  color: #333;
  max-width: 700px;
  margin: 0 auto;
  padding: 50px;
  border-radius: 50px;
}