Using the offset technique to hide a nested navigation menu, i.e. giving 

```
position : absolute
left : -9999em 

```

to the sub menus and then on hover, change it to `left:0;`

Code - <https://codepen.io/yogesharora28/pen/WNNPQKV>

Could there be any potential issues using this way? One thing I noticed is that, using screen readers for accessibility, if you use short cut keys in screen reader, all the links in the sub menu will be coming up in that and you will have to tab through all links in sub menu.

Not sure, if this is desired or not.