Use an opaque background for the course calendar side bar
Currently, the course calendar side bar has a transparent background and is designed to not scroll when the rest of the page scrolls. On laptop screens, this means that when the page is scrolled down, the footer overlaps with the side bar, making the bottom portion of the side bar hard to read. Please make the side bar have an opaque background that overrides any colours on the rest of the page when the two overlap. See the screenshots for more details.
Jeff Resnick commented
Thank you for pointing out this behavior, we are in the process of correcting this issue, and will update when it's complete.