html,
body {
    width: 100%;
    height: 100%;
    display: table;
    position: relative;
    background: url(../img/solardjs.jpg) no-repeat center center scroll;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
    -o-background-size: cover;
}
.logo {padding-bottom: 5%;}
.img-responsive {
    display: block;
    max-width: 100%;
    height: auto;
    margin:0 auto;
}
footer ul.list-inline {text-align: center;}
footer ul.list-inline>li {display: block;padding:10px;}
iframe {padding-bottom: 20px;margin:0 auto;}