CSS Box Shadow Generator Online

Writing the box-shadow property by hand usually involves tabbing back and forth between your code editor and your browser 20 times trying to guess the correct pixel spread. This visual generator lets you dial in the exact depth, blur, and spread you need using UI sliders, and instantly grab the cross-browser CSS.

Achieving Modern "Soft" Shadows

The biggest mistake developers make is creating harsh, dark shadows that make a website look like it was built in 2012. Modern UI design relies on highly diffused, ambient shadows. To achieve this "floating" effect, push the Blur Radius very high (e.g., 40px) and pull the shadow's opacity down extremely low (e.g., 5% to 8% black).

The Inset Property

By default, box shadows project outwards. If you add the inset keyword to the CSS property, the shadow renders inside the element's bounding box. This is incredibly useful for creating pressed-state buttons, debossed design elements, or deep input fields without relying on complex border tricks.

Does It Affect Layout?

No. A major benefit of the box-shadow property is that the browser renders the shadow completely independently of the Document Object Model (DOM) flow. A massive 100px shadow will not trigger a layout shift, push adjacent elements away, or cause a scrollbar to appear.