body {
    padding: 0px;
    margin: 0px;
    border: 0px;
}

header {
    text-align: center;
    padding: 10vw;
    font-family: sans-serif;
    background-image: url('images/wall.jpg');
    background-size: 100%;
    background-position: 100%;
    background-size: cover;
}

.mainbox {
    
    margin-left: 200px;
    margin-right: 200px;
    margin-top: -150px;
    background-color: white;
    box-shadow: 5px 5px 50px 5px rgba(0,0,0,.2);
    text-align: center;
    

}