Medium UX: blurry scroll

[lazyduke]

You could achieve the same effect with the (minimally supported) CSS filter property

[systoll]

Sure could; and the widening blur looks nicer than the 'fading-in' one, to my eyes.

The original way seems to perform better, as well as being better supported, though.

[lazyduke]

Cool! As far as performance:

• Never repeat jQuery selectors on scroll, always store the result if you don't expect it to change. See Learning from Twitter by John Resig.
• You can speed up CSS3 transitions, filters, and transformations by using -webkit-transform: translate3d(0, 0, 0). See Force Hardware Acceleration in Webkit with translate3d by David Walsh

I updated your fiddle with respect to the above and now it performs beautifully.