#about-box {
    padding-bottom: 30px;
    padding-top: 30px;
}
#about-box h2 {
    line-height: 45px;
    margin-bottom: 18px;
    margin-top: 28px;
    height: 58px;
}
#about-box a {
    text-decoration: none;
}
#about-box h1 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 12px;
}
@media (max-width: 750px) {
    #about-box h1 {
        font-weight: bold;
        margin-top: 10px;
        font-size: 20px;
    }
}
/*视频*/
#play-btn {
    width: 106px;
    height: 106px;
    overflow: hidden;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -53px;
    margin-left: -53px;
    cursor: pointer;
}
#play-btn img {
    display: block;
    width: 106px;
    height: 106px;
    outline: none;
    border: 0;
    box-shadow: none;
}

#about-box h6 {
    border-bottom: solid 3px #ccc;
    width: 100px;
    margin-top: 13px;
    margin-bottom: 13px;
}

#about-box p {
    font-size: 19px;
    margin-bottom: 0;
    line-height: 1.7em;
    text-align:justify;
    text-indent: 30px;
}

#about-box p a {
    padding: 10px 60px;
    border-radius: 3px;
    font-size: 14px;
    display: inline-block;
    background: #2c2f34;
    margin-top: 40px;
}

#about-box img {
    width: 100%;
    vertical-align: middle;
}
#about-box video{
    /*margin-top: 76px*/
}
@media (max-width: 750px) {
    #about-box video{
        margin-top: 0;
        margin-bottom: 10px;
    }
}
.col-padding{
    padding: 0 16px;
}

/* 当浏览器的可视区域小于xxx px，兼容小米air 屏幕1208分辨率电脑 */
@media screen and (max-width: 1210px) {
    #about-box video{
        margin-top: 50px!important;
    }
    #about-box p {
        font-size: 15px;
    }
}