.screenList {
    width: 100%;
}
.screen {
	width:auto;
	margin-right: 10px;
}
.screen_ul{
	width: 90%;
	float: left;
}
.screen_li{
	width: 100px;
}
@media only screen and (max-width: 768px) { 
	.screenBox{height: auto; margin-bottom: 5px;}
	.screen{width: 100%;display: none;}
	.screen_ul {
		width: 100%;
		float: none;
		height: auto;
	}
	.screen_li {
		width: 22%;
		height: 40px;
		line-height: 40px;
		margin: 0 5px;
		margin-bottom: 10px;
	}
	.screenList{
		height: auto;
		margin-top: 5px;
	}
}