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W3.CSS

Hover Effect

You can also add special effects on hover/mouse-over.
Note: The w3-hover-sepia and w3-hover-grayscale classes are not supported in IE 11 and earlier versions.
w3-hover-opacity:
W3.CSS

Hover Effect

You can also add special effects on hover/mouse-over.
Note: The w3-hover-sepia and w3-hover-grayscale classes are not supported in IE 11 and earlier versions.
w3-hover-opacity: