So that you'll be better informed when choosing and installing themes, let's take a quick look at some factors to consider when choosing a theme, and what actually makes a theme.
A WordPress theme is actually a collection of files in a folder. There are no special or unusual formats, just a few requirements for those files in the theme folder. The only requirements for a folder to be a valid WordPress theme are:
style.cssfile and an
style.cssfile must have the basic theme information in its first five lines.
There are a number of additional files that you'll find in most theme folders. They are:
screenshot.pngfile—this is the little thumbnail that shows what the theme ...