.qb{width:1200px; margin:0 auto; font-size:16px;color:#000;line-height:180%;font-family: "微软雅黑";}
.qb strong{font-size:16px;color:#000;line-height:180%;font-family: "微软雅黑";}



@media screen and (max-width: 800px){

.qb{width:100%;margin:0 auto; font-size:16px;color:#000;line-height:180%;font-family: "微软雅黑";}
.qb strong{font-size:16px;color:#000;line-height:180%;font-family: "微软雅黑";}
.img{width:100%;}

}