The appearance of a site is affected by two things; the theme and the layout.
A theme regulates the “look and feel” of your site: the background colors, background images, font type, font color – even the space between lines of text can be controlled by a theme.
Layout is concerned with what Widgets are enabled and where they are placed on your blog.
You have a lot to say in terms of how your blog appears, so let’s see how these things can be customized to suit your needs.