Dropdown size

I have seen a couple problems with this plugin. I do like it but I may have to uninstall it if I cannot find a solution…..

First, I normally use Firefox and right now I am using 48.0.2. The first problem is when you go to type in a username and pass. You cannot see anything that you type in either field. For example when clicking on Username to input there, a cursor appears in the middle of the field. But you can only see the bottom of the cursor and nothing that you type in. The same happens in the password field. And the Submit button is so low that you can only see the top of the button and cannot even read “Submit” on the button.

If I use Chrome, I can see what is being typed in. But you still cannot see the whole button.

So what can I do to change the size and layout of the dropdown? I am pretty well versed in HTML and CSS so if you just point me in the right direction I can probably figure it out myself. However, specific examples would be greatly appreciated to help cut the amount of time I would have to spend trying to fix this.

You can view my web site at https://JimAndMS.com

Thanks in advanvce!
Jim