Old Website To Responsive

How to make an existing website responsive? from webdev

https://www.valtech.com/insights/6-steps-to-retrofit-your-current-website-for-responsive-design/

https://www.w3schools.com/html/html_responsive.asp

https://catswhocode.com/how-to-make-a-responsive-website/

https://dzone.com/articles/convert-an-existing-non-responsive-website-to-resp

How to Make a Website Responsive in Just 15 Minutes

https://www.quora.com/How-do-I-code-an-already-existing-website-to-be-responsive