I want underline to be removed from a link. Also I want underline to appear when I hover it with my mouse pointer. How can this be done? Pls help. 

No hover:
![NO Hover - Normal link](https://i.stack.imgur.com/5knzW.png)

When I hover the `Login` link:
![When I hover the Login link](https://i.stack.imgur.com/CWLZ9.png)