body {
    overflow: hidden;
}

.video-player {
    background-color: transparent;
    display: block;
    position: absolute;
    z-index: 1;
    top: 0;
}

.video_mask {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    z-index: 90;
    background-color: rgba(0,0,0,0.5);
}

.login {
    height: 280px;
    width: 260px;
    padding: 20px;
    background-color: rgba(0,0,0,0.5);
    border-radius: 4px;
    position: absolute;
    left: 50%;
    top: 45%;
    margin: -150px 0 0 -150px;
    z-index: 99;
}

    .login h1 {
        text-align: center;
        color: #fff;
        font-size: 24px;
        margin-bottom: 20px;
    }

.form_code {
    position: relative;
}

    .form_code .code {
        position: absolute;
        right: 0;
        top: 1px;
        cursor: pointer;
    }

.login_btn {
    width: 100%;
}