Optional, default stylesheets

[olaven]

Is your feature request related to a problem? Please describe.
Yes. A blog has no styles out of the box. This is something that I personally like,
but it does make for a higher barrier to entry.

Describe the solution you'd like
Somehow providing default stylesheets, e.g. through options.
If a user does want styling, but doesn't want to write one themselves,
default stylesheets would be nice.