How to use box-shadow property in CSS? - scmGalaxy
css - box shadows on multiple elements at same level but without overlap? - Stack Overflow
3 ways to style CSS box-shadow effects - LogRocket Blog
CSS-Tricks on Twitter: "Multiple box-shadows, adjacent borders, text-shadow, low-opacity pseudo-elements... lots of little CSS things here to add some depth to a UI status board. https://t.co/mL0Cu2zfQ4 https://t.co/FInXTUUUIG" / Twitter