#stage {
    position: relative;
    width: 800px;
    height: 400px;
    background: #ddd;
    border: 1px solid #999;
}

#stage img {
    position: absolute;
    cursor: move;
    user-select: none;
}

/* velikosti nástrojů */

.icon-mic {
    width: 40px;
}

.icon-guitar {
    width: 60px;
}

.icon-drums {
    width: 120px;
}

.icon-piano {
    width: 140px;
}

.icon-monitor {
    width: 70px;
}