div.jumbotron {
background-image: url(../img/robot1.png);
}
div.jumbotron div.imglayer {
background-color: rgba(0,0,0,0.3); 
border-radius: 6px;
}
div.jumbotron div.imglayer h1 {
color: #f0f0f0;
text-shadow: 1.5px 1.5px 3px #333; 
}