如何在悬停时创建垂直侧边栏菜单应该显示三个子菜单列？

Question

                ＆LT; /跨度＆GT;礼品指南＆lt; / a＆gt; - ＆GT;                 绘画                                                                                                                                

                                                                             式

                                        

美术

                                        

摘要

                                        

现代

                                        

街头艺术

                                        

波普艺术

                                                                                                      

                                                                             受试者

                                        

肖像

                                        

风景

                                        

静物

                                        

自然

                                        

沙滩

                                                                                                      

                                                                             介质

                                        

油

                                        

水彩

                                        

丙烯酸

                                        

喷笔

                                        

数字

                                                                                                                                                                 

Answer 1

使用此

Link to vertical menu

https://www.bootply.com/fe4AfcEnKD