body {
    background: #fff;
}

.sy-zw {
    height: calc(100vh - 96px);
}

.about-wrap .img {
    width: 100%;
}

.about-txt {
    margin-left: 20px;
    text-align: center;
}

.about-txt .counter {
    display: block;
}

.video-bg {
    left: 0;
}