Mobile Ready Tests

   Firefox

Shortcut: key CTRL-Shift-M

Dev tools: F12

Click in Dev tools on the far right the Smartphone/tablet button

   Opera

Dev tools Shortcut key CTRL-Shift-C

Click, on the first line right: the smartphone/tablet button

MAC: Dev tools; CMD-Shift-C

Click in Dev tools on the, upper line left on Dimensions

   Edge

Dev tools: F12

MAC: Dev tools; CMD-Shift-C

Click in Dev tools on the, upper line left on Dimensions