Accessibility?

I have just completed the CSS basics module, but as I completed it using a work computer that has disabled sound, I was not able to hear the videos that are available under Font Families. I have compensated with most videos by taking advantage of Closed Captioning, but I was disappointed to see that this was not available. For me, as a hearing person, it’s not a big deal. I can hear the instructions on another computer. But that small detail makes this entire program that much less accessible for a member of the deaf community. As a disabilities advocate, I felt obliged to point this out.

Thank you.