.background-image{
    background-image: url(../images/background_start.jpg);
    width: 100%;
    height: 400px;
    background-repeat: no-repeat;
    background-size: contain;
    background-clip: content-box;
    background-position: center center;
    margin-top: 40px;
    margin-bottom: 40px;
}

div.row > div{
    margin-top: 10px;
}