headroom.css

/*
* {
  margin: 0;
  padding: 0;
  border: 0;
}
*/

/*
#foo {
    width: 1024px;
    height: 1056px;
    background-image: url("http://jsrun.it/assets/8/5/K/8/85K8v.jpg");
    background-repeat: no-repeat;
    background-position: 0px 100px;  
}
*/

.initial {
    background-color: green;
    opacity: 0.5;
}

.pinned {
    background-color: blue !important;
    opacity: 0.5;
}

.unpinned {
    display: none;
}