.jumbotron{
border-radius:0px!important;
box-shadow:1px 1px 4px rgba(0,0,0,0.4);
background-size: cover;
background-position: center center;
background-repeat: no-repeat;
background-image: url(https://static.pexels.com/photos/24324/pexels-photo.jpg);
position: relative;
height: 100%;
}
.jumbotron .btn{
border-radius:0px!important;
box-shadow:1px 1px 4px rgba(0,0,0,0.4);
padding:10px 40px;
}