.tt {
	width: 1155px;
	text-align: center;
	padding: 0;
	margin: 0 auto;
	border-bottom: 11px groove #f30;
	background-image: url(http://xxx-mom.com/images/bg09.jpg);
}
.tt_item {
	overflow: hidden;
	padding: 0;
	margin: 0;
	background-color: #3E3E3E;
	border-radius: 7px;
}
.tt_item li {
	float:left;
	overflow: hidden;
	text-align: left;
	letter-spacing: -1px;
	padding: 0;
	color: #7998BB;
	margin: 0;
}

@media screen and (max-width: 1260px) {
body { min-width:996px;}
.tt {width: 990px;}
}

@media screen and (max-width: 1000px) {
body { min-width:768px;}	
.tt {width: 750px;}
}

@media screen and (max-width: 788px) {
body { min-width:620px;}	
.tt {width: 610px;}
}

@media screen and (max-width: 620px) {
body { min-width:500px;}
.tt {width: 490px;}
}

@media screen and (max-width: 520px) {
body { min-width:300px;}
.tt {width: 300px;}
.tt_item img {width:150px;}
}