.horizon 
{
    background-color: transparent;
    position: absolute;
    top: 50%;
    left: 0px;
    width: 100%;
    margin-top: -250px;
    text-align: center;
    min-width: 800px;
}
.wrapper 
{
    background-color: #fff;
    position: relative;
    text-align: left;
    width: 800px;
    height: 480px;
    margin: 0px auto;
}