.stl1 {
    background-image:url('/img/background-image.jpg');
    height:1300px;
}

.stl2 {
    background-color:rgba(248, 241, 241, 0.1);
}

.stl3 {
    margin-top:200px;
}

.stl4 {
    background-image:linear-gradient(to right, #072a50 , #286bb3);
    height:550px;
}

.stl5 {
    background-color:rgba(6, 45, 87, 0.6);
}

.stl6 {
    display:inline-block;
}

.stl7 {
    max-width:680px;
}