body {
    font-family: verdana,Microsoft YaHei,Tahoma,sans-serif;
}


.icon {
    width: 60px;
    height: 60px;
    vertical-align: -0.15em;
    fill: currentColor;
    overflow: hidden;
}

 


.banner.bgFix {
    height: 400px;
    position: relative;
    overflow: hidden;
    background-attachment: fixed;
    -o-transition: height .5s ease-out;
    transition: height .5s ease-out;
    -webkit-transition: height .5s ease-out;
}

    .banner.bgFix:before {
        left: 0;
        border-style: solid;
        border-width: 120px 0 0 960px;
        border-color: transparent transparent transparent #fff;
    }
    .banner.bgFix:after {
        right: 0;
        border-style: solid;
        border-width: 0 0 120px 960px;
        border-color: transparent transparent #fff transparent;
    }
    .banner.bgFix:before, .banner.bgFix:after {
        content: '';
        position: absolute;
        bottom: 0;
        z-index: 2;
        width: 0;
        height: 0;
    }

    .banner.bgFix video {
        position: relative;
        z-index: 1;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .banner.bgFix h2 {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        -ms-transform: translate(-50%, -50%);
        -webkit-transform: translate(-50%, -50%);
        z-index: 3;
        color: #fff;
        font-weight: 700;
        font-size: 5em;
        text-shadow: 5px 5px 10px #333;
    }


.maskStyle:before {
    content: '';
    position: absolute;
    top: 0;
    z-index: 2;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
}