I have got a forum phpbb which contains a main banner (=picture) on the top.
I would like that this picture automatically adapts on ANY resolution (PC, Tablets, Smartphones, etc.), I mean that the picture get smaller and automatically uses all the width of the forum.
Because when I check my website on a Tablet, the picture got cropped and I want that the picture be smaller (instead of cropped).
This job is very easy and can be very fast to do, I will provide the requiered files / access to the person who will work on that.