.about_bg{height:auto;width:100%;overflow:hidden;position:static;background-size:100% 100%;height:auto;background-size:cover;background-attachment:fixed}

.about{margin:80px 0px 100px 0px;color:#fff;position:relative;color:#333;height:auto}
.about .tit_box{height:auto}
.about .tit{margin:0px 0px 0px 0px;height: 85px}
.about .tit h2{color:#0158a8;font-size:20px;font-weight:bold;font-family:arial}
.about .tit h3{color:#222;font-size:40px;padding-top:10px}
.about .tit_desc{font-size:18px;padding-top:10px;line-height:1.8;color:#999;text-align:right}
.about .info{height: auto}
.about .info .text{height: auto}
.about .info .text h2{color:#333;font-size:28px;margin:40px 0 20px 0}
.about .info .text .word{color:#999;font-size:16px;margin-top:40px;line-height: 2em}
.about .info .text .btn{color:#fff;font-size:16px;margin-top:40px;line-height: 2em;background-color:#0158a8; 
height: 50px; width:168px;line-height: 50px;text-align: center;
 border-radius: 28px;} 
.about .info .text i{padding-left: 10px;} 
.about .info .text .btn:hover{transition: all ease-in-out 0.6s .1s;opacity: 1;transform: translateX(30px);}

.about .photo img{width: 100%}

/* 小于768px  */
@media only screen and (max-width:768px){

.about .photo img{width: 100%}
.about .but_box{width:320px;}
.about .pic_item .pic img{height:160px;}
.about .but_box p{dfont-size:14px;}


}

@media only screen and (max-width:1300px){
.about .photo img{width: 100%}

}


/*数学*/ 
.gd_num{width: 100%; height: auto;background-color: #fff;position: relative;height: 300px}
.gd_num .num_box{z-index: 999; width: 100%;	position: relative;top:80px;border-radius: 15px;background-color: #0158a8;
background-position: 0% 70%;
} 
.gd_num .num_box .item_li{}
.gd_num .num_box .item_li {border-right: 1px solid #eee;}
.gd_num .num_box .item_li:nth-child(1) {border-left: 0px solid #eee;}
.gd_num .num_box .item_li:nth-child(4) {border-right: 0px solid #eee;}
.gd_num .num_box .item_li h2{color:#fff;}
.gd_num .num_box .item_li p{color:#fff;}
.gd_num .num_box .item_li i{color:#fff;font-size: 30px}
.gd_num .num_box .item_box{margin:40px;text-align:center}
.gd_num .num_box .item_box h2{font-size:48px;color:#fff;line-height:48px;display:inline-block}
.gd_num .num_box .item_box i{font-size:16px;color:#fff;line-height:48px;display:inline-block;font-style:normal;font-weight: bold;}
.gd_num .num_box .item_box p{font-size:16px;color:#fff;line-height:30px;font-weight: bold;}
.gd_num .num_box .item_box span{font-size:38px;color:#fff;line-height:30px;font-weight: bold;} 
 
/* 小于768px  */
@media only screen and (max-width:768px){
.gd_num .num_box .item_box h2{font-size:18px;}
.gd_num .num_box .item_box{margin:10px;}
.gd_num .num_box .item_box span{font-size:18px;color:#eb0000;line-height:30px;font-weight: bold;}


.gd_num .num_box .item_li:nth-child(3) {border-top: 1px solid #eee;}
.gd_num .num_box .item_li:nth-child(4) {border-top: 1px solid #eee;}



}

/* 大于769px  */
@media only screen and (min-width:769px){	
.gd_num .num_box .item_box h2{font-size:28px;}
.gd_num .num_box .item_box{margin:30px;}
}


/* 大于1024px */
@media only screen and (min-width:1024px){	
.gd_num .num_box .item_box h2{font-size:48px;}
.gd_num .num_box .item_box{margin:40px;}
}