[miz sue]

Hello!
I've been trying to search for an answer without a lot of success. If anyone can advise/help me, I'd so appreciate it. I received a cookbook in epub to fix up and then convert to mobi. I cracked open the epub and have been editing the css in dreamweaver.
Problem 1:
Each recipe is linked to the Content page. The headings were all blue, underlined links. I was able to change the css for the link to color:inherit and text-decorations:none. From there, I went to each subheading in the css and added color. This all worked great for epub. In the mobi, the links are still underlined but black (from the inherit). Can I get the headings to change color in the mobi same as I did in epub? Also, is there an easy way to remove the underline? There are 400 pages in this ebook set up in multiple files.
Problem 2:
There are TIP boxes created with div tags. There were splitting in the epub and I fixed it using display:inline-block and width:auto. So this keep it together and made each box the width of the screen. This approach did not continue into the mobi file. How can I correct the splitting and ensure each box is the width of the screen?
Thank you for any feeback!
Sue