.sm_main {width: 100%;height: auto;margin: 0 auto;max-width: 768px;background: #F3F1F4;}

.sm01 {width: 100%;height: auto;}
.sm01 img {width: 100%;height: 100%;display: block;}

.sm02 {width: 100%;height: auto;}
.sm02 img {width: 100%;height: 100%;display: block;}

.sm03 {width: 100%;height: auto;position: relative;}
.sm03 img {width: 100%;height: 100%;display: block;}
.sm03 .xz {position: absolute;width: 65%;height: 31%;top:50%;left: 50%;margin-left: -32.5%;margin-top: -21%;}