Inner Shadows in CSS: Images, Text and Beyond | Design Shack
Drop-Shadow: The Underrated CSS Filter - Mobirise Forums
Use CSS filter to Create a Drop Shadow | egghead.io
Breaking down CSS Box Shadow vs. Drop Shadow | CSS-Tricks - CSS-Tricks
filter: drop-shadow() Archives - Brian Treese
Text shadows, image shadows and css filters.
box-shadow vs filter: drop-shadow jl
css - SVG pixelated when using CSS3 drop-shadow filter with transform: scale - Stack Overflow
Haz on Twitter: "Here's a nice trick to create drop shadows on containers with overflow elements like arrows. Instead of using the CSS box-shadow property, you can use: filter: drop-shadow(0 3px 3px