body{height:100vh}.mainContent,body{width:100%;margin:0;padding:0}.mainContent{background-size:cover;background-position:fixed;background-repeat:no-repeat;background-attachment:fixed;min-height:100vh;font-family:Open Sans}footer{max-width:100%;padding:20px;position:-webkit-sticky;position:sticky;bottom:0;left:0;right:0;background-color:#fff}