URLOTW or URL of the week is a kind of post where I share a relevant URL with you :-)
This week the winner is The master guide to smooth, realistic shadows in CSS: dev.to/devang/the-master-guide-to-smooth-realistic-shadows-in-css-463p.
I got myself surprised by the use of multiple shadow layers to achieve such excellent results. Still, the support of most of the browsers for this feature is quite extensive.
I hope you like this CSS tip too!