This is my first project working with a sketch file (given to me by a designer for me to cut up into HTML/CSS).
So far I've loved the way sketch makes exporting easy, but I'm running into some trouble here. I have a slice drawn around a couple of vector layers that form a mask over an image. I have the slice perfectly clipped to the edges of the layers, but in the preview panel (and also when I export) sketch is adding pixels around the edges.
The "Trim transparent pixels" checkbox does nothing. What should I check next? Or am I doing it all wrong?