#demo-container{width:960px;margin:0 auto;}
.color-head{margin:40px 0px 20px 0px; font-size:25px;}
#menu-demo{padding:20px 0px; overflow:hidden; text-align:center;}
.demo-color{margin:5px; height:40px; width:40px; background:#000; float:left;}

@media screen and (max-width: 960px) {
	#demo-container{width:90%;}
}