The following banners were created for your use in your Canvas courses as desired.
To Save the Image: Right click the banner, Save As, and save to your computer files.
To Add to a course page: Click Edit on the desired page, click to place your cursor on an empty line at the top of the page, click the image icon from the toolbar and upload your banner from your computer's files.
Note: Once you upload an image anywhere in your Canvas course, it is saved in the "Files" section of your course! In the future, to reuse the image, simply edit the page, click the image icon and choose "Course Images". It will be listed there. (Probably in the uploaded media folder)