This site is mobile accessible. Press the "Tap Here" button to use a different font-size.

Tap Here!

Smartphone icons created by Freepik - Flaticon

// detects and displays the screen height
document.getElementById("demo").innerHTML = 
"Screen height is " + screen.height + "px";

If you're looking at this page with a cell phone, rotate the phone to the landscape orientation and refresh the page to see the height of the landscape mode.