If you would like to change the Moodle theme (ie. page layout and "look and feels") of the Moodle course webpage, there are several Moodle themes for your selection. To change the Moodle theme for your Moodle course, please follow the procedures below.
1. Go to Administration block > Course administration > Edit settings
2. In the course setting page, you will find Appearance section. You can choose another theme in the selection drop-down box, and then click Save and Display at the bottom of the page.