@media (max-width: 990px) { 
     .jumbotron {
        margin-top: 5px !important;        
    }
    .headerimage {
		background-image: url("rbm2.jpg");
		height: 300px;
    }
}
@media (max-width: 640px) {

  .headerimage {
		background-image: url("rbm.jpg");
		height: 300px;
    }
    h1, h2 {
        color: #262626;
        font: 18px arial, sans-serif;
        font-weight: 600;
    }
    .fbc {
        display: none;

    }

} 
@media (max-width: 493px) {
    .jumbotron {
        margin-top: 25px !important;        
    }
} 



@media screen and (min-width: 768px) {
   
}