Invalid Box Shadow Property Value-CodePudding

I got stuck using the inset property, I get this error of invalid property value on my inspect, my code is working well but it refuses to apply to my browser.enter image description here

Here's my code

div {
  padding: 5px 10px;
  box-shadow: inset 8px 8px 8px #cbced1, inset -8px -8px -8px #fff;
  border-radius: 20px;
}

<div></div>

CodePudding user response：

You specified a negative value for the shadow blur, which is not valid.

div {
  padding: 5px 10px;
  box-shadow: inset 8px 8px 8px #cbced1, inset -8px -8px 8px #fff;
  border-radius: 20px;
  width: 50px;
  height: 50px;
}

<div></div>