@charset "utf-8";

@media screen and (max-width:1537px){.header1,.header2,.header3{background-size:100% auto}}
@media screen and (max-width:1441px){}
@media screen and (max-width:1153px){}
@media screen and (max-width:1098px){}
@media screen and (max-width:961px){}
@media screen and (max-width:901px){}
@media screen and (max-width:865px){}
@media screen and (max-width:801px){}
@media screen and (max-width:769px){}
@media screen and (max-width:668px){}
@media screen and (max-width:641px){
.header1{background:url(index_banner_640_01.jpg) center top no-repeat;background-size:100% auto;}
.header2{background:url(index_banner_640_02.jpg) center top no-repeat;background-size:100% auto;}
.header3{background:url(index_banner_640_03.jpg) center top no-repeat;background-size:100% auto;}}