Responsive Rich Text in Blog Template

I need help making the blog template content responsive. The headers are not responsive and I’m not sure how to edit it in a template or in a rich text format. Please help! Screen shot for example and preview link is below. Thank you!!


https://preview.webflow.com/preview/cp-houston?utm_medium=preview_link&utm_source=designer&utm_content=cp-houston&preview=7c27fe2b8faae9126d0aa1d1d74cc8ff&pageId=5d819a42072bc3c504565374&itemId=5d819a42072bc329e956547a&mode=preview