[Gediminas]

Hello,
I downloaded theme for my wordpress blog that perfectly fits for blog's topic. But there is the problem: when image, which is near text, is bigger than text, image goes out of bounds. Maybe I didn't tell clearly, so I attach screenshot:

I edited style.css, added:

.post .entry img { height: 100px; width: auto; }

problem in the index fixed, but now when I click 'Read more', picture is also resized. So what I need is to edit HTML where posts in main page are shown. But WordPress source is a little bit complex, so can anyone tell me where I can find that piece of code, where posts in main page are shown?