All web developers know, at some level, that accessibility is important. But when push comes to shove, it can be hard to prioritize it above a bazillion other concerns when you’re trying to center a <div> and you’re on a tight deadline. A lot of accessibility advocates lead with the moral argument: for example, that disabled people should have just as much access to the internet as any other person, and that it’s a blight on our whole industry that we continually fail to make it happen. I person...