.toolbox{border:2px solid #999999;margin:8px;border-radius:8px;overflow:hidden;background-color:#fff}.app-toolbar{background-color:#d8d8d8;border-bottom:2px solid #888888;padding-left:20px}.pieces-toolbar{background-color:#fdd;border-bottom:2px solid #cc8888}.board-toolbar{background-color:#ffc;border-bottom:2px solid #cccc66}.solver-toolbar{background-color:#dff;border-bottom:2px solid #88cccc}