How to have Text-Shadow with Webkit gradient

Question

When I use Text-Shadow with Webkit gradient, it appears to be on top of the text - instead of behind. I increased the shadow opacity to show this.

#title {
  font-size: calc(15px + 9vw);
  text-align: center;
  background: linear-gradient(to right, red 0%, blue 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-top: 8vh;
  text-shadow: -10px 15px 5px rgba(0,0,0,0.1),
                 -10px 20px 5px rgba(0,0,0,1),
                 -10px 20px 5px rgba(0,0,0,1);
}

<h3 id="title">Example</h3>

Answer 1

And idea is to create another layer with pseudo-element that you put behind.

#title {
  font-size: calc(15px + 9vw);
  text-align: center;
  background: linear-gradient(to right, red 0%, blue 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-top: 8vh;
  position:relative;
}
#title:before {
  content:attr(data-text);
  position:absolute;
  top:0;
  right:0;
  left:0;
  bottom:0;
    text-shadow: -10px 15px 5px rgba(0,0,0,0.1),
                 -10px 20px 5px rgba(0,0,0,1),
                 -10px 20px 5px rgba(0,0,0,1);
  z-index:-1
}

<h3 id="title" data-text="Example">Example</h3>

And if you don't want to duplicate the text you can use both pseudo-element and define the text only in the attribute:

#title {
  position: relative;
  text-align: center;
  margin-top: 8vh;
  font-size: calc(15px + 9vw);
  z-index: 0;
}

#title:before {
  content: attr(data-text);
  position: relative;
  background: linear-gradient(to right, red 0%, blue 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  z-index: 1;
}

#title:after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  text-shadow: 
    -10px 15px 5px rgba(0, 0, 0, 0.1), 
    -10px 20px 5px rgba(0, 0, 0, 1), 
    -10px 20px 5px rgba(0, 0, 0, 1);
  z-index: -1;
}

<h3 id="title" data-text="Example"></h3>