Box Shadow Generator

Yes, you can add multiple shadows to create complex depth and effects. Each shadow can be individually adjusted.

An inset shadow appears inside the element rather than outside. While normal box-shadow appears outside, adding inset creates a recessed, pressed-in effect.

Real shadows are not black; they are the background color made darker, and they soften toward the edges. Instead of one heavy 30% black shadow, stack two or three very faint layers with different blur radii — say a 1 px shadow tight to the edge, an 8 px one behind it, and a very light 24 px one further out. Assume the light comes from above: give the shadow only a vertical offset and leave the horizontal one at zero.

In a static layout the cost is negligible, but it changes the moment you animate. Transitioning the box-shadow value on hover forces the browser to recompute the blur every frame, which stutters visibly on low-powered devices. If you need a shadow that grows on interaction, animate the opacity or transform of a pre-rendered shadow layer instead — the result is far smoother.