Hello everyone.

My blog is:

So I am attempting to set up a site through Blogger and up until today everything was going great. The custom template I had chosen was working fine, until suddenly it wasn't. The template shows summaries of the blog posts in two columns, with two posts per row. But now it is showing all the summaries in a single column, leaving lots of blank space. Also, a drop down menu of my categories/labels is now displaced.

I thought I had made some sort of mistake with widgets, so I deleted the most recent ones I had added, which did not help the issue. Unfortunately, my knowledge of html/css is very limited so I don't know where in the code to start looking for the issue.

Any help would be very much appreciated.