Help merging 2 piece of CSS codes….

Hi there,

I am using the theme Black Bible and knocking my head over the menu section for a few weeks now.
I am trying to give it a drop down menu.
So I found a code that could give me drop down menu in CSS and that is currently on my website. However, I wish to keep the original gif menu buttons from the theme and I can’t seem to merge them.
Anyone would know how to help me?

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Anyone has an idea on how I could merge those 2 so the main menu still uses the li2.gif buttons? Please note those 2 buttons (active on hover and not active on hover) come in a single .gif file. Not sure why this is though.