/*首页-公司简介*/
.about_bg{

    margin-top: 60px;
    background: url(../images/about_bg.jpg);
    padding-bottom: 70px;
}
.about_head h2{
    text-align: center; 
    margin-top: 60px; 
    font-size: 36px; 
    color: #585858;
    font-weight: bold;
}
.about_head span{
    color: #d8d8d8; 
}
.about_head p{
    text-align: center;
    color: #7f7f7f; 
    margin-top:8px;
    margin-bottom: 50px;
}
.about_h3{
    font-family: Arial;
    color: #079BE5;
    font-size: 54px;
    font-weight: bold;
    margin: 0px;
}
.about_p{
    font-size: 16px;
    color: #000;
    padding-bottom: 20px;
    border-bottom: 1px solid #dadada;
}
.about_content{
    line-height: 30px;
    color: #555;
    margin-top:20px;
}
.about_btn{
    display: block;
    text-align: center;
    width: 170px;
    padding: 8px 0px;
    color: #fff;
    text-decoration: none;
    background-color: #079BE5;
    margin-top: 20px;
}
.about_btn:hover,.about_btn:focus{
    color: #fff;
    text-decoration: none;
    background-color: #585858;
}
.about_video{
    width: 100%;
}
.about_video img{ max-width:100%;}


/*小屏幕样式*/
@media screen and (max-width: 768px) {

 /*手机-首页公司简介*/
    .about_bg{
        margin-top: 20px;
    }
    .about_head h2{
        margin-top: 45px; 
        font-size: 26px; 
    }
    .about_head p{
        font-size: 14px; 
        margin-top:8px;
        margin-bottom: 35px;
    }
    .about_h3{
        font-size: 48px;
		margin-top:60px;
    }
    .about_content{
        margin-top:0px;
    }
    .about_btn{
        display: block;
        width: 200px;
        margin: 0 auto;
        margin-top: 20px;
        margin-bottom: 40px;
    }
}