.minisize-layer{
    opacity: .5;
    display: none;
    cursor: move;
    .btn-control{
        position: absolute;
        top: 50%;
        left: 0;
        width: 100%;
        height: 60px;
        margin-top: -30px;
        font-size:30px;
        color: #ddd;
        -webkit-user-select: none;
    }

}
.yk-video-fixed {
    position: fixed;
}
.yk-video-fixed:hover {
    .minisize-layer {
        display: block;
    }
}