@media only screen and (max-width: 1600px) {
    	#slider {
   
    height:400px;
	}
}
 @media only screen and (max-width: 1400px) {
    	#slider {
   
    height:350px;
	}
}  
 @media only screen and (max-width: 1200px) {
    	#slider {
   
    height:300px;
	}
}
 @media only screen and (max-width: 900px) {
    	#slider {
   
    height:250px;
	}
}