Added Web Visual Effects with CSS3 (#3996)

free-programming-books.md

@@ -1473,6 +1473,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Understanding Flexbox: Everything you need to know](https://ohansemmanuel.github.io/uf_download.html) - Ohans Emmanuel
 * [W3.CSS Succinctly](https://www.syncfusion.com/ebooks/w3_css_succinctly) - Joseph D. Booth
 * [Web Audio API](http://chimera.labs.oreilly.com/books/1234000001552) - Boris Smus
+* [Web Visual Effects with CSS3](https://leanpub.com/web-visual-effects-with-css3/read) - Thomas Mak
 
 
 #### Bootstrap