How to make a website for mobile devices?

Question

Mobile development

Colleagues, please tell me the answer to the burning question) I need to make a wordpress version of the site for smartphones and tablets. Are they essentially separate sites with their own logic and architecture? Or can you get by with some WordPress plugins? And the last question from the category of "blondes" - how best to formulate this task for freelancers? Thanks in advance for your replies!

Answer 1

Make better adaptive design
Unless the functionality on the mobile. devices should be different.
And adaptability is done through @media-queries in CSS
On freelance, formulate this:
Make a WP site adaptive

Answer 2

Freelancer wording: Make an existing template responsive to different resolutions.