.bg_parallels{position:absolute;left:0;top:0;width:100%;height:500px;background-size:cover;background-attachment:fixed;background-repeat:no-repeat;-webkit-animation:scrollUp 3s linear;animation:scrollUp 3s linear;background-position-y:20%}@-webkit-keyframes scrollUp{0%{background-position-y:0}to{background-position-y:20%}}@keyframes scrollUp{0%{background-position-y:0}to{background-position-y:20%}}