#virtualJumbotron{
    background-image: url("https://images.unsplash.com/photo-1494961104209-3c223057bd26?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1384&q=80");
    background-size: cover;
    color:white;
    text-shadow:3px 3px black;
}

.center{
    display: block;
    margin-left: auto;
    margin-right: auto;

}

.card{
    text-align:center;
}