Core themes

Drupal 7 comes with the following core themes.

Bartik

The default theme in Drupal 7.

Seven

Designed to be a clean administration theme for Drupal 7 core.

Stark

This theme contains very little styling. It is designed to show Drupal 7's default HTML markup and CSS styles.

Garland

Garland has been a part of Drupal since Drupal 5, and has been updated for Drupal 7 core.