What is CSS box-shadow?

The box-shadow CSS property adds shadow effects around an element's frame. It sounds simple, but there's a lot packed into it — X and Y offsets, blur radius, spread radius, color, and even the option to stack multiple shadows on the same element. Get it right and a subtle shadow can make a card or button feel grounded and real. Get it wrong and it just looks dated.

Why Use a Visual Generator?

• Tweaking box-shadow by hand in your CSS is a slog. You change a number, save, reload, squint at the screen, and repeat. A visual generator skips all of that — you see exactly what you're getting as you drag the slider.
• Sliders for offset, blur, and spread are just more intuitive than guessing pixel values. You don't have to remember that a higher blur radius means a softer edge; you can just feel it out and land on something that looks right.
• Some of the best shadow effects — layered shadows, low-opacity depth, inset shadows with negative spread — aren't something you'd easily think to write from scratch. Playing around with the generator is a great way to stumble onto effects you wouldn't have come up with otherwise.
• If you're still getting your head around how box-shadow works, this tool is genuinely one of the fastest ways to learn. Change one property at a time and watch what it does. It clicks a lot faster than reading documentation.

How to Use This Generator

Adjust the sliders for each property and pick your shadow color and opacity. The preview updates live so you're never guessing. Once you've got something you like, the generated CSS is sitting right there — just copy it and drop it into your stylesheet.