pages too long

Hello, I wonder if someone can help me to fix my pages. I tried a different theme and it altered the way it worked when I went back to it. Now my pages are way too long. I tried limiting the number of posts but that didn’t help. I think it could be the style sheet. Here it is if anyone knows what I need to do to fix it. Thanks for your help
/*
Theme Name: Preference Lite

[Entire CSS file removed – please see: http://codex.ww.wp.xz.cn/Forum_Welcome#Posting_Code and instead please post a link to your site]