/* CSS Document */

*{margin: 0;padding: 0;}

.fix::after {visibility: hidden;display: block;font-size: 0;content:""; clear: both; height: 0;}

.fix{*zoom:1;}

.preferential_wrap{max-width: 640px;min-width: 320px; margin-left: auto;margin-right: auto; overflow: hidden; color:#000; padding-top: 1%; padding-bottom: 1%; position:relative}
.preferential_wrap img{ width:100%}