Shadows, tuned by eye
A good shadow is a matter of small numbers — a few pixels of offset, a soft blur, a low opacity. Getting them right by editing CSS and reloading is slow; here you drag sliders and the preview responds instantly, so you can find a shadow that reads as a natural elevation rather than a hard drop.
Every parameter, including inset
Offset, blur, spread, colour and opacity are all here, plus the inset toggle for recessed shadows. The output is a single, ready-to-paste box-shadow declaration. It all runs on your device with nothing uploaded.