You can start up a new photography portfolio website, first all testing, you can see different all devices from Laptop to Mobile Phone and Desktop, screen sizes examples; 320px, 568px, 768px, etc.
If you are looking different navbar, sidebar nav, etc. You can choose.
hi cleison, thank you for your reply! i am afraid that is not what i meant – i was trying to have a different text shown whether the website is opened with a notebook or a tablet or a smartphone for instance. so each of these would have a customized, different text when opening the site with according device. i did not find a way to do that yet. thank you!