@media screen and (min-width:1000px){
.gs_con{max-width:1200px;margin:0 auto;margin-top:40px;overflow:hidden;}
#cont{width:70%;float:left;overflow:hidden;}
#cont_ri{width:28%;float:right;overflow:hidden;}
}
@media screen and (max-width:999px){
.gs_con,#cont,#cont_ri{width:98%;margin:0 auto;overflow:hidden;}


}