.aboutus_container{}

.aboutus_container .category_nav{width:350px;}
.aboutus_container .category_nav a{display:block; margin-bottom:30px; font-size:20px; color:#606060;}
.aboutus_container .category_nav a .s_num{display:block; margin-top:5px; padding-top:5px; font-size:25px; position:relative;}
.aboutus_container .category_nav a .s_num::after{content: ''; display: block; position: absolute; top:0px; left: 0; width:0; height:3px; background-color:#0188e1; transition: all .5s ease;}
.aboutus_container .category_nav a.s_act,.aboutus_container .category_nav a:hover{color:#0188e1;}
.aboutus_container .category_nav a.s_act .s_num::after,.aboutus_container .category_nav a:hover .s_num::after{width:100%;}



.aboutus_container .certificate_list{width:1020px;}
.aboutus_container .certificate_list a{display:block; width:300px; margin:0 20px 30px 20px; text-align:center; float:left;}
.aboutus_container .certificate_list a span{display:block; margin-top:10px; height:20px; line-height:20px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;}
.aboutus_container .certificate_list img{width:100%;}

.aboutus_container .salesnetwork_tabble th,.aboutus_container .salesnetwork_tabble td{padding:10px;}

@media screen and (max-width:1400px){
	.aboutus_container .category_nav{width:100%; margin-bottom:20px;}
	.aboutus_container .category_nav a{float:left; margin:0 8px 10px 8px; font-size:16px;}
	.aboutus_container .category_nav a .s_num{font-size:20px;}
	.aboutus_container .certificate_list{width:100%;}
	.aboutus_container .certificate_list a{width:33.33%; padding:0 10px; box-sizing:border-box; margin:0 0 30px 0;}
}

@media screen and (max-width:768px){
	.aboutus_container .certificate_list a{width:50%;}
}

@media screen and (max-width:488px){
	.aboutus_container .certificate_list a{width:100%; float:none;}
}