w3-small:
W3Schools
Link 1
Link 2
Link 3
w3-medium:
W3Schools
Link 1
Link 2
Link 3
w3-large:
W3Schools
Link 1
Link 2
Link 3
w3-xlarge:
W3Schools
Link 1
Link 2
Link 3
w3-xxlarge:
W3Schools
w3-xxxlarge:
W3Schools