html, body, main, p {
    padding: 0;
    margin: 0;
    color: #333;
    font-family: "微软雅黑";

}
a{
    text-decoration: none;
    color: #333;
}
.about{

}
.about_banner{
    width: 100%;
    height: 300px;
    margin-top: 60px;
    position: relative;
    background-position: center;
    background-image: url(../imgs/about_banner.jpg);
}
.about_banner_bj{
    width: 1200px;
    height: 300px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}
.about_banner_bj img{
    width: 1920px;
    height: 300px;
    max-width: 1920px;
}
.about_banner_main{
    width: 1200px;
    height: 300px;
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 20px;
    margin: 0 auto;
}
.about_banner_main span:nth-child(1){
    font-size: 40px;
    font-weight: 600;
    margin-bottom: 20px;
}


.about_company{
    width: 1200px;
    margin: 0 auto;
    padding: 80px 0;
}
.about_company_top{
    display: flex;
    justify-content: space-between;
    align-items: center;
    
}
.about_company_top_left{
    width: 420px;
    height: 325px;
    display: flex;
}
.about_company_top_right{
    width: 700px;
}
.about_company_top_right_a{
    font-size: 40px;
    color: #1c1c1c;
    display: flex;
    flex-flow: column;
}
.about_company_top_right_a i{
    width: 50px;
    border-top: 1px solid #ddd;
}
.about_company_top_right_a i:nth-of-type(1){
    width: 100px;
    margin-bottom: 5px;
    margin-top: 10px;
}

.about_company_top_right_b{
    font-size: 15px;
    color: #666;
    display: flex;
    flex-flow: column;
    margin-top: 10px;
}
.about_company_top_right_b span{
    line-height: 25px;
    text-indent:30px;
}


.about_company_bottom{
    margin-top: 60px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.about_company_bottom_one{
    width: 30%;
    display: flex;
    justify-content: space-between;
}
.about_company_bottom_one_left{
    margin-right: 30px;
}
.about_company_bottom_one_right{
    display: flex;
    flex-flow: column;
    color: #999;
    font-size: 15px;
    line-height: 25px;
}
.about_company_bottom_one_right span:nth-child(1){
    font-size: 20px;
    font-weight: 600;
    color: #1c1c1c;
    margin-bottom: 20px;
}

.about_idea{
    width: 100%;
    height: 700px;
    position: relative;
    background-position: center;
    background-image: url(../imgs/about_idea_bj.png);
}

.about_idea_main{
    margin: 0 auto;
    width: 1200px;
    height: 700px;
}
.about_idea_main_title{
    height: 250px;
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
    font-size: 35px;
    color: white;
}

.about_idea_main_title i{
    width: 50px;
    border-top: 1px solid #ddd;
}
.about_idea_main_title i:nth-of-type(1){
    width: 100px;
    margin-bottom: 5px;
    margin-top: 10px;
}

.about_idea_main_content{
    display: flex;
    justify-content: space-between;
}
.about_idea_main_content_one{
    width: 30%;
    background-color: white;
    display: flex;
    justify-content: center;
    height: 280px;
    position: relative;
}

.about_idea_main_content_one_img{
    width: 100px;
    height: 100px;
    position: absolute;
    top: -50px;
    background-color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 10px 0 rgba(0, 0, 0, 0.3)
}

.about_idea_main_content_one_text{
    width: 80%;
    height: 100%;
    display: flex;
    flex-flow: column;
    align-items: center;
    justify-content: flex-end;
}

.about_idea_main_content_one_text span{
    color: #999;
    font-size: 14px;
}
.about_idea_main_content_one_text span:nth-child(1){
    color: #1c1c1c;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 5px;
}

.about_idea_main_content_one_text p{
    line-height: 28px;
    text-align: center;
    padding: 30px 0 40px;
}



.about_cooperation{
    width: 1200px;
    margin: 0 auto;
    padding: 20px 0 30px;
}
.about_cooperation_title{
    display: flex;
    flex-flow: column;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    height: 120px;
}
.about_cooperation_title span:nth-child(1){
    margin-bottom: 10px;
    font-size: 26px;
}
.about_cooperation_main{
    display: flex;
    flex-flow: wrap;
    justify-content: space-between;
}
.about_cooperation_main section{
    width: 23%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    transition: all 2s;
    cursor: pointer;
}
.about_cooperation_main section img{
    transition: all 1s;
}
.about_cooperation_main section:hover img{
    transform: scale(1.2,1.2)
}


.about_qualification{
    width: 1200px;
    margin: 0 auto;
    padding: 20px 0 30px;
}
.about_qualification_title{
    display: flex;
    flex-flow: column;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    height: 120px;
}
.about_qualification_title span:nth-child(1){
    margin-bottom: 10px;
    font-size: 26px;
}
.about_banner_mb{
	display: none;
}

@media screen and ( max-width:750px ) {
	.about_banner_mb{
		margin-top: 60px;
		display: block;
		background-image:url(../imgs/about_banner_mb.png);
		width: 100%;
		height: 120px;
		background-size: 100% 100%;
	}
    .about_banner{
		display: none;
        width: 100%;
        height: 300px;
    }
    .about_banner_bj{
        width: 100%;
        height: 300px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .about_banner_bj img{
        width: 1920px;
        height: 300px;
    }
    .about_banner_main{
        width: 100%;
        font-size: 14px;
    }
    .about_banner_main span:nth-child(1){
        font-size: 30px;
        font-weight: 600;
    }
    .about_banner_main span:nth-child(2){
        width: 80%;
        margin: 0 auto;
        text-align: center;
    }

    .about_company{
        width: 100%;
        padding: 40px 0;
    }
    .about_company_top{
        display: block;
    }
    .about_company_top_left{
        width: 100%;
        justify-content: center;
        align-items: center;
        display: none;
    }
    .about_company_top_left img{
        width: 420px;
        height: 325px;
    }
    .about_company_top_right{
        width: 92%;
        margin: 0 auto;
    }
    .about_company_top_right_a{
        font-size: 24px;
    }
    .about_company_top_right_b{
        margin-top: 10px;
    }
    .about_company_bottom{
        margin-top: 30px;
        display: block;
    }
    .about_company_bottom_one{
        width: 92%;
        margin: 0 auto 10px;
    }
    .about_company_bottom_one_left{
        margin-right: 15px;
    }
    .about_company_bottom_one_right span:nth-child(1){
        font-size: 18px;
        font-weight: 600;
        color: #1c1c1c;
        margin-bottom: 10px;
    }
    .about_idea{
        width: 100%;
    }
    .about_idea_bj{
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .about_idea_bj img{
        width: 2408px;
        height: 700px;
    }
    .about_idea_main{
        width: 100%;
        height: 700px;
    }
    .about_idea_main_title{
        height: 100px;
        font-size: 24px;
    }
    .about_idea_main_title span{
        margin-bottom: 10px;
    }
    .about_idea_main_title i{
        display: none;
    }
    .about_idea_main_content{
        flex-flow: column;
    }
    .about_idea_main_content_one{
        width: 92%;
        margin: 0 auto 40px;
        height: 100%;
    }
    .about_idea_main_content_one_img{
        width: 60px;
        height: 60px;
        top: -30px;
    }
    .about_idea_main_content_one_img img{
        width: 50px;
        height: 50px;
    }
    .about_idea_main_content_one_text{
        width: 90%;
    }
    .about_idea_main_content_one_text span:nth-child(1){
        margin: 30px 0 5px;
    }

    .about_idea_main_content_one_text p{
        line-height: 25px;
        padding: 5px 0;
        font-size: 14px;
    }




    .about_cooperation{
        width: 100%;
    }
    .about_cooperation_main{
        width: 92%;
        margin: 0 auto;
    }
    .about_cooperation_main section{
        width: 47%;
        margin-bottom: 15px;
    }
	
	
	.about_qualification{
        width: 100%;
    }
    .about_qualification_main{
        width: 92%;
        margin: 0 auto;
    }
}