.sz_list li{ float: left;width: 20%;overflow: hidden;text-align: center;line-height: 30px;font-size: 16px;height: 330px; }
.sz_list li .img_box{display: block;width: 90%;margin: 0 auto;}
.sz_list li .img_box img{ width: 100%; }
.hj_mc{ font-size: 14px; }



@media only screen and (max-width:1024px){
.main_content { width: 100%; padding: 0 10px; box-sizing: border-box;}
.article_left { width: 22%;}
.main .main_content .article_right { width: 76%;}
.sz_list li{ height: 300px; }
}
@media only screen and (max-width:768px){
.main_content{ padding:0; }

}
@media only screen and (max-width:640px){
.sz_list li { width: 25%;}

}

@media only screen and (max-width:560px){
.sz_list li { width: 33%;}

}


@media only screen and (max-width:400px){
.sz_list li { width: 50%;height: 316px; }

}

@media only screen and (max-width:340px){
.sz_list li { width: 50%;height: 276px; }

}