CSS vertical scrollbar padding left/right in UL possible?

Is it possible to add padding or margin around the scrollbar item or scrollbar-track? I've tried and can only get padding top/bottom. Adding padding to the UL has no effect on scrollbar. Negative margins on scrollbar have no effect. Ideas? JS Fiddle here.

::-webkit-scrollbar {
width: 12px;
margin:10px;
}

::-webkit-scrollbar-track {
-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3); 
-webkit-border-radius: 10px;
border-radius: 10px;
padding: 10px
}

::-webkit-scrollbar-thumb {
-webkit-border-radius: 10px;
border-radius: 10px;
background: rgba(255,0,0,0.8); 
-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.5); 
}
::-webkit-scrollbar-thumb:window-inactive {
background: rgba(255,0,0,0.4); 

You can see an example below, basically forget adding margin or padding there, just increase the width/height of scroll area, and decrease the width height of thumb/track.

Quoted from https://stackoverflow.com/questions/9226059/how-to-customise-custom-scroll

body {
  min-height: 1000px;
  font-family: sans-serif;
}

div#container {
  height: 200px;
  width: 300px;
  overflow: scroll;
  border-radius: 5px;
  margin: 10px;
  border: 1px solid #AAAAAA;
}

div#content {
  height: 1000px;
  outline: none;
  padding: 10px;
}

::-webkit-scrollbar {
  width: 14px;
}

::-webkit-scrollbar-thumb {
  border: 4px solid rgba(0, 0, 0, 0);
  background-clip: padding-box;
  border-radius: 9999px;
  background-color: #AAAAAA;
}

<div id="container">
  <div id="content" contenteditable>
    Click to type...
  </div>
</div>

I created a margin-right effect using border-right on the scrollbar-thumb:

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-thumb {
  background: red;
  border-right: 4px white solid;
  background-clip: padding-box;
}

The scrollbar appears to have width 4px and margin-right 4px.

Here's a fiddle as well: https://jsfiddle.net/4kgvL93h/3/

This solution make a real space between content and scrollbar (if a scrollable element doesn't have a transparent background). Useful for window scrollbars.

.scroll {overflow:auto;}
.scroll::-webkit-scrollbar {
    width:16px;
    height:16px;
    background:inherit;
}
.scroll::-webkit-scrollbar-track:vertical {
    border-right:8px solid rgba(0,0,0,.2);
}
.scroll::-webkit-scrollbar-thumb:vertical {
    border-right:8px solid rgba(255,255,255,.2);
}
.scroll::-webkit-scrollbar-track:horizontal {
    border-bottom:8px solid rgba(0,0,0,.2);
}
.scroll::-webkit-scrollbar-thumb:horizontal {
    border-bottom:8px solid rgba(255,255,255,.2);
}
.scroll::-webkit-scrollbar-corner,
    .scroll::-webkit-resizer {background:inherit;
    border-right:8px solid rgba(255,255,255,.2); //optional
    border-bottom:8px solid rgba(255,255,255,.2); //optional
}

You can add a margin to the scrollbar track;

#someID ::-webkit-scrollbar-track{
  border-radius: 15px;
   margin: 40px;
  box-shadow: inset 7px 10px 12px #f0f0f0;
  
 }

Another important attribute to add vertical or horizontal margin:

::-webkit-scrollbar-track {
  margin: 0 30px;
}

Simply use the margin-block

::-webkit-scrollbar-track {
   box-shadow: inset 0 0 5px F2F2F2; 
   border-radius: 0px;
   margin-block: 15px;
}

#container{
    height:400px;
    background-color:white;
    overflow-y:scroll;
    border-radius:25px;  
}

#content{
    height:700px;
    background-color:yellow;
    padding:25px;
}

::-webkit-scrollbar{
    width: 5px;
}
  
  /* Track */
::-webkit-scrollbar-track{
    box-shadow: inset 0 0 5px F2F2F2; 
    border-radius: 0px;
    margin-block: 25px;
}
   
  /* Handle */
::-webkit-scrollbar-thumb{
     background: #8B8B8B; 
     border-radius: 27px;
     border: 4px solid rgba(0, 0, 0, 0);
 }

<div id="container">
  <div id="content">
    <br>
    Click to type...
    <br>
  </div>
</div>

With border-radius, neither box-shadow works properly nor does background-clip: padding-box.

I created a parent div on top of the div which needs scrolling. And fixed the height of parent div and put padding right in the child div. That worked well for my case.

<div class="parent h-10 overflow-scroll">
 <div class="scroll child pr-2">
     <!-- CONTENT -->
 </div>
</div>