header {
    height: 74px;
}

.img-box {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
}

.search-box {
    width: 820px;
}

.input-search {
    width: 700px;
    height: 50px;
    line-height: 50px;
    font-size: 16px;
    color: #545454;
    border-top-left-radius: 3px;
    border-bottom-left-radius: 3px;
    border: none;
    padding: 0 15px;
    float: left;
}

.btn-search {
    width: 120px;
    height: 50px;
    line-height: 50px;
    font-size: 20px;
    background: #39d8bc;
    border-top-right-radius: 3px;
    border-bottom-right-radius: 3px;
    text-align: center;
    float: left;
    transition: all .2s;
}

.btn-search:hover {
    background: #2aad96;
    transition: all .2s;
}

.icon-search {
    width: 120px;
    height: 50px;
    line-height: 50px;
    font-size: 18px;
    color: #fff;
}

.center-box {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -120%);
}

.text-box {
    line-height: 40px;
    font-size: 34px;
    color: #00c5a3;
    letter-spacing: 3px;
    text-align: center;
    padding-bottom: 20px;
}

.qrcode-box {
    padding: 20px;
    position: fixed;
    bottom: 0;
    right: 0;
}

.qrcode-box img {
    width: 150px;
    height: 150px;
}

.qrcode-box h2 {
    line-height: 36px;
    font-size: 15px;
    color: #fff;
    background: rgba(0, 0, 0, .5);
    text-align: center;
}


.video-box {
    width: 100%;
    height: calc(100vh - 74px);
    overflow: hidden;
}

.video-box video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.btn-box {
    display: flex;
    display: -webkit-flex;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -30px;
    margin-left: -198px;
}

.btn-box a {
    line-height: 20px;
    font-size: 18px;
    color: #fff;
    background: #39d8bc;
    box-shadow: 0 0 12px 2px rgba(57, 216, 188, .3);
    border-radius: 40px;
    letter-spacing: 4px;
    margin: 0 20px;
    padding: 20px 35px;
    transition: all .2s;
}

.btn-box a:hover {
    background: #06af91;
    transition: all .2s;
}