Dynamic CSS Masks with Custom Properties and GSAP - Codrops
CSS Masking Module Level 1
Masking in the Browser with CSS and SVG - SitePoint
CSS & SVG Masks (Test cases)
mask-mode - Codrops
mask-composite | CSS-Tricks - CSS-Tricks
Addy Osmani on Twitter: "Great guide to CSS mask-image: https://t.co/fWLWAGdVvM ~ specify an image or gradient to use as a mask layer. By @rachelandrew https://t.co/QOptFxOHSa" / Twitter