.after, .before {
    height:50px;
    background-color: gray;
    margin-top: 10px;
    margin-bottom: 10px;
}
#banner {
    position: relative;
    height:300px;
    width:100%;
    overflow: hidden;
}
#videobcg {
    position: absolute;
    top: 0;
    left: 0;
    min-width: 100%;
    min-height: 100%;
    height:auto;
    width:auto;
    z-index: -100;
}