Making Login Widget Overlay Correctly (change z-Index?)

I have the Login widget set as Dropdown Form. Need help with two things:

1. Change cursor to show it's a clickable link (e.g. hand)
2. Need Form to show over all text - right now it looks like: https://gyazo.com/f98221908b2794395fc4779c8585ceee

What CSS do I need to change to make this happen?