body {
  font-family: Helvetica, sans-serif;
  margin: 0;
}

header {
  background: url('images/bill.jpg') no-repeat center left fixed;
  background-size: cover;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  height: 12em;
  padding: 3em 2em;
}

header h1 {
  color: white;
  display: inline;
  background-color: darkred;
  padding: 0.55em 1.25em;
  font-family: cursive;
  font-size: 2.5em;
}

.about {
  text-align: center;
  padding: 3em;
  font-family: cursive;
}

h4 {
  display: inline;
  background-color: darkred;
  padding: 0.75em 1.25em;
  color: white;
  text-transform: uppercase;
  font-size: 85%;
  letter-spacing: 0.125em;
}

.books, .contact {
  margin: 3em 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.books img, .contact img {
  margin: 1em;
}

footer {
  text-align: center;
}