/* 左导航 右内容 */
.tzzgx{margin-top:70px;}
.tzzleft_nav{width:310px;height:auto;float:left;}
.tzzright_nr{width:835px;min-height:500px;float:left;margin-left:55px;margin-bottom:80px;}



.gongsi_xinxi{margin-top:20px;}


/* 响应式css */

 /*  1200-1920   */
@media screen and (min-width:1200px) and (max-width:1920px){


}


/*   900-1199   */
@media screen and (min-width:900px) and (max-width:1199px){

}


/*    737-899   */

@media screen and (min-width:737px) and (max-width:899px){


}


/*    480-736    */
@media screen and (min-width:480px) and (max-width:736px){
.tzz_left_nav{display:none;}
.tzzright_nr {float: left;margin-bottom: 80px;margin-left: inherit;min-height: 500px;width: 100%;}

.gongsi_xinxi img{width:100%;}
.tzzright_nr{margin:1%;}



}


/*    320-479    */
@media screen and (min-width:320px) and (max-width:479px){
.tzz_left_nav{display:none;}
.tzzright_nr {float: left;margin-bottom: 80px;margin-left: inherit;min-height: 500px;width: 100%;}

.gongsi_xinxi img{width:100%;}
.tzzright_nr{margin:1%;}



}

/*      320     */
@media screen and (max-width:320px){
.tzz_left_nav{display:none;}

.tzzright_nr {float: left;margin-bottom: 80px;margin-left: inherit;min-height: 500px;width: 100%;}

.gongsi_xinxi img{width:100%;}
.tzzright_nr{margin:1%;}


}