Clipping and Masking in CSS | CSS-Tricks - CSS-Tricks
Text Masking Using SVG | Mask Video | SVG - CSS Tutorial - YouTube
background - How do you style triangular mask in CSS? - Stack Overflow
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