But while we're at it... you really should consider another idea. I don't know how many posts you've set to be displayed on your home page, but no mentally healthy person would ever scroll 5000px or more down just to get an overview of the recent posts :D.
Instead, you'd rather want to display excerpts and make it more obvious to the visitor, that the headlines of your posts are links to the whole content (with underline, or at least a hover-effect... or both).
Next, you should add some margin-bottom or border-bottom to div.post to emphasize, where one posts ends and another starts. Despite of the headlines, it's a little confusing now without any separation.