<style>

#skjfgsdjkgjkdjdkf {

    height: 100px;

    width: 120px;

    padding: 10px;

    font-size: 1em;

    overflow: auto; 

  border-radius:10px;

  box-shadow: inset 13px 0px 6px -10px rgb(66 66 66 / 20%), inset -13px 0px 6px -10px rgb(66 66 66 / 56%), inset 0px 13px 6px -10px #ffffff, inset 0px -13px 6px -10px rgb(66 66 66 / 38%);

      }

​

  #skjfgsdjkgjkdjdkf::-webkit-scrollbar {

width: 0; /* remove scrollbar space */

background: transparent; /* to make scrollbar invisible */

}

#skjfgsdjkgjkdjdkf::-webkit-scrollbar-thumb {

background: transparent;

}

</style>

<div id="skjfgsdjkgjkdjdkf">

scrollbar with box shadow inset <br>

  <a href="https://jsbin.com/pijanutele/edit?html,output">code</a><br>

  Candy gummies macaroon gummi bears marshmallow dragée. Croissant jujubes bonbon oat cake dragée sugar plum. Marshmallow donut oat cake muffin cheesecake lollipop apple pie apple pie

​

</div>