/* CSS */
body {
  background: #fff url('../images/bg.jpg');
  background-size: 100%;
  position: relative;
  font-family: 'Open Sans', sans-serif;
}
.block {
  text-align: center;
}
.block:before {
  content: '';
  display: inline-block;
  height: 100%; 
  vertical-align: middle;
  margin-right: -0.25em;
}
.centered {
  display: inline-block;
  vertical-align: middle;
  width: 500px;
  margin-top: 150px;
  padding: 10px 15px;
}