body {
  padding: 50px;
  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
}

a {
  color: #00B7FF;
}

img.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
}
.center {
  margin-left: auto;
  margin-right: auto;
}
h1 {text-align: center;}
p.center {text-align: center;}
p.narrow {max-width: 1000px;}
div {text-align: center;}
div.narrow {
  max-width: 750px;
  text-align: left;
  margin-left: auto;
  margin-right: auto;
}

body {max-width: 1900px;}