Box shadow bottom like bracket

Question

I am trying to implement bracket at bottom of a div. here my shadow will be like bracket . I tried below section. Bur problem is it's taking full left right section. I want like this image. any suggestion will be appreciable.

div{
-webkit-box-shadow:0px 1px 1px #de1dde;
 -moz-box-shadow:0px 1px 1px #de1dde;
 box-shadow:0px 1px 1px #de1dde;
 height:100px;
  }

<div>wefwefwef</div>

Answer 1

You can use gradient for this:

div {
  margin: 20px;
  width: 300px;
  height: 50px;
  padding:3px;
  background:linear-gradient(to right,blue 3px,transparent 0px,transparent calc(100% - 2px),blue 0) 0 100%/ 100% 30px no-repeat,
  linear-gradient(to top,blue 2px,transparent 0);
}

<div>wefwefwef</div>

Or a pseudo element like this:

div {
  margin: 20px;
  width: 300px;
  height: 50px;
  padding:3px;
  position:relative;
}
div:before {
  content:"";
  position:absolute;
  bottom:0;
  height:20px;
  left:0;
  right:0;
  border:2px solid blue;
  border-top:none;
}

<div>wefwefwef</div>

Or border-image with gradient:

div {
  margin: 20px;
  width: 300px;
  height: 50px;
  padding:3px;
  border: 3px solid transparent;
  border-image: linear-gradient(to bottom,transparent 60%,blue 0) 10;
}

<div>wefwefwef</div>