我可能建议您简单地使用鼠标将该区域添加到您的CSS中，以使其可滚动:

I may suggest simply to make the area scrollable with mouse adding this to your css:

.projectorganizer {
....
}
.SlideContainer {
    width:calc(100% + 17px);
    height: 110%;
    overflow-y: scroll;
    overflow-x: hidden;
}