.zt_img{overflow: hidden; width: 100%; padding-left: 2%; box-sizing: border-box;}
.ztimg_t{margin-bottom:10px;width: 100%;}
.zt_img .ztimg_l,.zt_img .ztimg_m,.zt_img .ztimg_r{width: 32%; margin-right: 1%; box-sizing: border-box;}
.zt_img .ztimg_l img,.zt_img .ztimg_m img,.zt_img .ztimg_r img{margin-bottom: 3%;}
.column p{margin: 23px 0 25px; text-align: center;}
.column p a{width: 214px; height: 35px; border: 1px solid #ddd; line-height: 35px; font-size: 14px; color: #666; display: block; margin: 0 auto;} 

@media screen and (max-width:420px){
.zt_img{padding: 0 2%;}
.zt_img .ztimg_l,.zt_img .ztimg_m,.zt_img .ztimg_r{width: 100%;}
.zt_img .ztimg_t img,.zt_img .ztimg_l img,.zt_img .ztimg_m img,.zt_img .ztimg_r img{width: 100%; height: auto;display:block}

}