.banner{
    height: 640px;
    width:100%;
}
.banner_img{
  height: 640px; 
   width:100%;
}
.aboutme{
    height: 900px;
}
.text{
  text-align: center;
    font-size: 30px;
    padding: 45px 0;
    color: #838282;

}
.content{
    text-align:justify;
    width: 1500px;
    line-height: 30px;
    font-size: 14px;
    margin: 0 auto;
    color: #838282;
}
.content img{
    width: 100%;
    height: auto;
}
.pinzhi{
    background-image: url(../img/pinzhi.png);
    height: 550px;
    width:100%;
    color: white;
}
.pz_head{
    padding-top: 190px;
    font-size: 30px;
    text-align: center;
}
.pz_body{
    margin: auto;
    font-size: 24px;
    padding-top: 60px;
    text-align:justify;
    width: 1500px;
    line-height: 40px;
}
.box{
    display: flex;
    justify-content: space-between;
    width: 1500px;
    /* align-items: center; */
    margin: 100px auto 60px;
    
}
.box_s{
    /* width: 430px; */
    /* padding: 0px 180px 0px 180px ; */
    padding: 0px 40px 0px 40px;
}
.box_s_img{
    float: left;
}
.box_s_text{
    padding-top: 10px;
    padding-left: 100px;
    color: #57595B;
    font-size: 18px;
    float: none;
}
.box_text{
    margin-top: 80px;
    line-height: 28px;
    color: #838282;
    font-size: 14px;
}
.box_x{
    width: 28%;
}
.fengcai {
    width: 1500px;
    height: auto;
    margin: 50px auto;
}

.product_top {
    height: 120px;
    display: flex;
    align-items: center;
}

.product_top_nav {
    width: 1000px;
}

.product_top_nav .product_top_navs {
    color: #838282;
    font-size: 18px;
    padding: 8px 20px;
    margin-right: 20px;
    border: 1px solid #838282;
}

.product_top_nav .product_top_navs:last-child {
    margin-right: 0px;
}

.product_top_nav .product_top_navs:hover {
    color: #fff;
    background-color: #0E5A9E;
    border: 1px solid #0E5A9E;
}

.product_top_nav .active {
    color: #fff;
    border: 1px solid #0E5A9E;
    background-color: #0E5A9E;
}

/* wap */
@media only screen and (max-width: 768px){
    .fengcai {
        width: 100%;
        height: auto;
        margin: 25px auto;
    }
    .product_top_nav .product_top_navs {
        font-size: 14px;
    }
    .aboutme {
        height: auto;
        width: 90%;
        margin: 0 auto;
    }
    .content{
        width: 100%;
    }
    .pinzhi{
        width: 100%;
        height: auto;
    }
    .pz_head {
        padding-top: 60px;
    }
    .pz_body{
        width: 90%;
        padding: 60px 0;
    }
    .box {
        width: 100%;
        margin: 20px auto 60px;
        flex-wrap: wrap;
        flex-direction: column;
        align-content: center;
    }
    .box_x {
        width: 90%;
        margin-top: 50px;
    }
	.product_top_nav {
	    width: 90%;
	    margin: 0 auto;
		display: flex;
	
	}
}