Can not make responsive for mobile despite tutorials etc

Looking for assistance in making this site responsive for mobile? I am using static images on slider pages. Despite following all guidelines from responsive tutorials I can seem to make it work. Any assistance would be greatly appreciated. Thanks


Here is my site Read-Only: [https://preview.webflow.com/preview/beresford-holding-site-e7fdcf?utm_medium=preview_link&utm_source=dashboard&utm_content=beresford-holding-site-e7fdcf&preview=471f82a45a59c3a1982097ce06b9b1c5&mode=preview

I can’t select this text. Is it some kind of image?
image