JSFiddle - React, Tailwind, and code Playground
HTML
<img src="http://www.webkit.org/blog-files/kate.png" style="-webkit-mask-box-image: url(http://www.webkit.org/blog-files/vignette-mask.png) 75 stretch;">
<img src="http://www.webkit.org/blog-files/kate.png" style="-webkit-mask-box-image: url(http://www.webkit.org/blog-files/vignette-mask.png) 75 stretch;">