To make sure that the banner image you created fits into the banner area, please do the following:
- Go to Style > Designer.
- Under Colors, click Banner Image.
- On the dialog box that opens up, click Size.
- Click on one of the available options: Auto (retains the original image size), Cover (stretches your image to cover the entire banner area), Contain (stretches your image to proportionally to fit in the banner area).
- Click Save.