.bubbles-panel {
    background-color: rgba(255, 255, 255, 0.25);
    height: 100%;
    left: 0;
    position: absolute;
    top: 0;
    width: 30%;
}

.bubbles-panel.bubbles-panel-hidden {
    left: -30%;
    position: absolute;
    top: 0;
}