Get rid of the title on top of section

Hi, You know how the title of each section/course is alway dispayed in large font on top of each section page? I recently saw a RISE example where the title on top of each section is hidden. 

https://slidesugar-dogcarebasics.s3-us-west-1.amazonaws.com/content/index.html#/?_k=65atkv

Can some one tell me how to do that please?

Thank you!

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