Why did my text become smaller when viewed on Preview or on mobile device?

It is likely that the number of text on the particular screen of your module is too long.

The text on your modules are dynamic (to fit the different dimensions of your learners’ mobile devices & to eliminate scrolling) and they automatically reduce in size if the text on any particular screen is too long. 

We encourage you to reduce the number of text you have on your screen by keeping it concise or to break your content into separate screens or modules. This helps to keep your modules bite-sized and palatable for your learners too!