2 Aug 06, 2010 03:14
Best guess - since I'm not sure exactly what you're after - would be to check out the SEO tab on the Blog settings and check some of the settings. Primarily, the "Main page/post list" and the "Category pages" sections.
If you look at the "Post contents" options... yours are set differently: "Full post contents" for the main page and "Post excerpts" for the category pages. This will result in different <div> classes which are probably styled differently in the css file.
If you make the "Post contents" options the same for the main page and the category pages on the SEO tab... you may find that they'll look more similar.
No promises though! ;)