Have an Issue here

I have an issue with my blog. Here is the link: http://www.ynotdaily.com/wordpress

The issue obviously is the text in the post… it just keeps going and going across the whole site… I’m new to customizing WordPress so I will start by saying that I DID mess around with the stylesheet trying to make my own template and in that process I must of messed something up (or a lot)

Can anyone pin point the problem?

Thanks