w3-round corner
w3-rounded
w3-round
None of these
w3-hover-color
w3.hover-color
w3:hover-color
w3-hovreable-color
w3-large
w3-xxlarge
w3-xlarge
provide 16px top and bottom margin and 16px left and right padding
provide 16px top and bottom margin and 16px left and right margin
provide 16px top and bottom padding and 16px left and right margin
provide 16px top and bottom padding and 16px left and right padding
w3.card
w3-card
w3-list-card
w3.list-card
w3-border
w3.border
w3.-border
16px, 16px, 16px, 16px
16px, 20px, 14px, 14px
16px, 16px, 14px, 14px
14px, 14px, 16px, 16px