CSS Filter Effects: Blur, Grayscale, Brightness and More in CSS! — SitePoint
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Stefan Judis on Twitter: "TIL: SVG filter can be inlined in CSS. 😲 Blog: https://t.co/o1wxGW0GCk Big thanks to @mathias for sharing this detail in his post. :) 👇 https://t.co/vj5pF01jTG https://t.co/sxnR75Cxu4" / Twitter
How To Create a Black and White Image
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html - Replicate the partial CSS Grayscale filter in JavaScript? - Stack Overflow