/* Move down content because we have a fixed navbar that is 50px tall */
body {
  padding-top: 50px;
  padding-bottom: 20px;
background-image: url("../img/cs.jpg"); 
	  background-size:cover;
	  background-repeat: no-repeat;
	  background-attachment:fixed;
	
}
.jumbotron {
	background: azure;
}
.col-md-3 {
	background: rgba(0,50,100,.8);
	color: white;
	border:1px solid white;
	text-align:center;
}
a {color:white; font-weight:bold;text-decoration:none;}