I found a couple of topics that asked a similar question but not for my uses. I wan't to create a simple image swap on mouseover element for an image link. From what I can tell this isn't possible in webflow even though it is a pretty basic html feature since I first learned dreamweaver over 8 years ago. I want the option to create an image link where it is only text with full transparency and have parts of it appear and disappear with hover. I want to be able to add a colored drop shadow to the image. This would be very easy with an image swap, have the first image with no shadow and the second image with the colored shadow as well. I tried doing the background image trick and having the link image fade in from 100% transparency but because it is fully transparent, they didn't line up and remain that way on all devices.
A good example of this is the HI text on my site http://dfinkdesign.webflow.com Imagine the first image being just HI in gray, and the rollover to add the red drop shadow. Obviously the image wouldn't just be adding the drop shadow but an entire swap including the HI text element as well.