.tt {width: 1143px;text-align: center;padding: 0;margin: 0 auto;border-bottom: 11px groove #f30;}
.tt_item {padding:0;margin: 0;}
.tt_item li {float:left;overflow: hidden;padding: 0;margin: 0;}
.tt_item li  img{width:127px;}

@media screen and (max-width: 1260px) {
body { min-width:996px;}
.tt {width: 987px;}
.tt_item img {width:141px;}
}

@media screen and (max-width: 1000px) {
body { min-width:768px;}	
.tt {width: 750px;}
.tt_item img {width:150px;}
}

@media screen and (max-width: 775px) {
body { min-width:620px;}	
.tt {width: 608px;}
.tt_item img {width:152px;}
}

@media screen and (max-width: 620px) {
body { min-width:500px;}
.tt {width: 488px;}
.tt_item img {width:122px;}
}

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