Slide-based e-learning courses are generally more customized and feature many different types of content, including media-rich, complex interactions. These courses can be scaled up and down to fit different screen sizes, but the content can’t be reflowed like a responsive website because objects on the slides need to stay in the same position relative to one another to make sense. For example, you wouldn’t want to have two characters in an interactive scenario suddenly shift position when the learner viewed your content on a smaller screened device.