Menu1
Child1
Grandchild1
Greatgrandchild1
Greatgrandchild2
Greatgrandchild3
Greatgrandchild4
Greatgrandchild5
Grandchild2
Grandchild3
Grandchild4
Grandchild5
Child2
Child3
Child4
Child5
Menu2
Menu3
Menu4
Child1
Grandchild1
Greatgrandchild1
Greatgrandchild2
Greatgrandchild3
Greatgrandchild4
Greatgrandchild5
Grandchild2
Grandchild3
Grandchild4
Grandchild5
Child2
Child3
Child4
Child5
Menu5
Child1
Grandchild1
Greatgrandchild1
Greatgrandchild2
Greatgrandchild3
Greatgrandchild4
Greatgrandchild5
Grandchild2
Grandchild3
Grandchild4
Grandchild5
Child2
Child3
Child4
Child5
https://webdesignday.jp/inspiration/technique/css/5793/