html {
  background: url(wildwood.jpg) no-repeat center center fixed;
  background-size: cover;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
}

h1, h2, h3, h4 {
  width: 100%;
  text-align: center;
  color: white;
}

h1 {
  font-size: 3.5em;
}

h2 {
  font-size: 2.5em;
}

h3 {
  font-size: 1.75em;
}

body {
  width: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  padding: 0.5em 0;
  margin: 2em 0;
}