1 - move issue
menu button → hover with difference top/bottom-margin = “move effect”:
2 - broken layout
Hard to solve this (Because you use endless styles and ideas for very simple dropdown).
“Problem” - you set two classes (One with extra margin-left). By the way - its better to use the same class for all menu items.
3 - position
From the right - maybe remove all styles and use this menu type.
