@davew

I am hardly an expert at this, however I did the free code camp responsive web design course during lockdown in 2020/21.

IIRC a media query is used to take the screen size and apply specifc attributes (such as font size) according to the size (in pixels) of the screen.

https://www.w3schools.com/css/css3_mediaqueries.asp

Clearly a desktop / laptop screen is a lot bigger than a tablet or mobile.

It should be possible to resize images, much easier with svg as they are meant to scale.

Hope this helps

#html
#css
#mediaquery
#webdesign

Hopefully someone can help with this.