@media (min-width: 150px) and (max-width: 479px) {
div#chat-window{
 width:90%;
}



}



@media (min-width: 480px) and (max-width: 767px) {

}




@media (min-width: 768px) and (max-width: 991px) {
div#chat-window{
 width:90%;
}

}


@media (min-width: 992px) and (max-width: 1199px) {
div#chat-window{
 width:90%;
}

}


@media (min-width: 1400px) and (max-width: 1920px) {
div#chat-window{
 width:55%;
}	
	
}