body, section {
  margin: 0;
  border: 0;
}
section.module.parallax {
  height: 250px;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  background-attachment: fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
section.module.parallax-1 {
  background-image: url("coral.jpg");
}

.blank{ 
  height:250px;
  background-color:#666666;
  margin:25px;
}