Turn a web page through 90 degrees.
I am on an Imac using Sequoia 15.1.1 - I have downloaded a web page which is now lying horizontal in view mode.
When I originally downloaded it, it was in its correct vertical view mode. I think I pressed a key or did something to turn it through 90 degrees. I am unable to see any way of reverting to its correct viewing position after many attempts and google solutions. Even apple don't appear to have a solution for Sequoia yet, the only Apple help I could find suggested "System settings"-"Displays"-"Rotate", which doesnt exist in sequoia . Has anyone got any suggestions as to how to do this
iMac 24″, macOS 15.1