horizontal only webkit scrollbar style css

Question

this is custom scrollbar in css

 /* Gmail style scrollbar */
 ::-webkit-scrollbar {
   width: 12px
 }
 ::-webkit-scrollbar-thumb {
   border-width: 1px 1px 1px 2px
 }
 ::-webkit-scrollbar-track {
   border-width: 0
 }
 ::-webkit-scrollbar {
   height: 16px;
   overflow: visible;
   width: 16px;
 }
 ::-webkit-scrollbar-button {
   height: 0;
   width: 0;
 }
 ::-webkit-scrollbar-track {
   background-clip: padding-box;
   border: solid transparent;
   border-width: 0 0 0 4px;
 }
 ::-webkit-scrollbar-track:horizontal {
   border-width: 4px 0 0
 }
 ::-webkit-scrollbar-track:hover {
   background-color: rgba(220, 172, 0, .05);
   box-shadow: inset 1px 0 0 rgba(220, 172, 0, .1);
 }
 ::-webkit-scrollbar-track:horizontal:hover {
   box-shadow: inset 0 1px 0 rgba(220, 172, 0, .1)
 }
 ::-webkit-scrollbar-track:active {
   background-color: rgba(220, 172, 0, .05);
   box-shadow: inset 1px 0 0 rgba(220, 172, 0, .14), inset -1px 0 0 rgba(220, 172, 0, .07);
 }
 ::-webkit-scrollbar-track:horizontal:active {
   box-shadow: inset 0 1px 0 rgba(220, 172, 0, .14), inset 0 -1px 0 rgba(220, 172, 0, .07)
 }
 ::-webkit-scrollbar-thumb {
   background-color: rgba(220, 172, 0, .2);
   background-clip: padding-box;
   border: solid transparent;
   border-width: 1px 1px 1px 6px;
   min-height: 28px;
   padding: 100px 0 0;
   box-shadow: inset 1px 1px 0 rgba(220, 172, 0, .1), inset 0 -1px 0 rgba(220, 172, 0, .07);
 }
 ::-webkit-scrollbar-thumb:horizontal {
   border-width: 6px 1px 1px;
   padding: 0 0 0 100px;
   box-shadow: inset 1px 1px 0 rgba(220, 172, 0, .1), inset -1px 0 0 rgba(220, 172, 0, .07);
 }
 ::-webkit-scrollbar-thumb:hover {
   background-color: rgba(220, 172, 0, .4);
   box-shadow: inset 1px 1px 1px rgba(220, 172, 0, .25);
 }
 ::-webkit-scrollbar-thumb:active {
   background-color: rgba(220, 172, 0, 0.5);
   box-shadow: inset 1px 1px 3px rgba(220, 172, 0, 0.35);
 }
 ::-webkit-scrollbar-track {
   border-width: 0 1px 0 6px
 }
 ::-webkit-scrollbar-track:horizontal {
   border-width: 6px 0 1px
 }
 ::-webkit-scrollbar-track:hover {
   background-color: rgba(220, 172, 0, .035);
   box-shadow: inset 1px 1px 0 rgba(220, 172, 0, .14), inset -1px -1px 0 rgba(220, 172, 0, .07);
 }
 ::-webkit-scrollbar-thumb {
   border-width: 0 1px 0 6px
 }
 ::-webkit-scrollbar-thumb:horizontal {
   border-width: 6px 0 1px
 }
 ::-webkit-scrollbar-corner {
   background: transparent
 }
 body::-webkit-scrollbar-track-piece {
   background-clip: padding-box;
   background-color: #f5f5f5;
   border: solid #fff;
   border-width: 0 0 0 3px;
   box-shadow: inset 1px 0 0 rgba(220, 172, 0, .14), inset -1px 0 0 rgba(220, 172, 0, .07);
 }
 body::-webkit-scrollbar-track-piece:horizontal {
   border-width: 3px 0 0;
   box-shadow: inset 0 1px 0 rgba(220, 172, 0, .14), inset 0 -1px 0 rgba(220, 172, 0, .07);
 }
 body::-webkit-scrollbar-thumb {
   border-width: 1px 1px 1px 5px
 }
 body::-webkit-scrollbar-thumb:horizontal {
   border-width: 5px 1px 1px
 }
 body::-webkit-scrollbar-corner {
   background-clip: padding-box;
   background-color: #f5f5f5;
   border: solid #fff;
   border-width: 3px 0 0 3px;
   box-shadow: inset 1px 1px 0 rgba(220, 172, 0, .14);
 }

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I use the above code to beautify my scroll bar, but I do not want to style my vertical bar.

I tried to remove the tags which don't contain 'horizontal' but it doesn't work.

Answer 1

For horizontal scroll bar set height

::-webkit-scrollbar{
    width: 12px;
    height: 12px;
}

Answer 2

Once you've set the css for

::-webkit-scrollbar{}

both the horizontal and vertical bars are automatically affected.

If you want the horizontal bar to look different from the vertical bar, you will have to set separate CSS for each, like this:

::-webkit-scrollbar-thumb:horizontal {
    background-color:#5B0B2B;
}
::-webkit-scrollbar-thumb:horizontal:hover{
    background-color:#B31252;
    border: solid 1px #5B0B2B;
}

::-webkit-scrollbar-thumb:vertical {
    background-color:#2A8894;
}
::-webkit-scrollbar-thumb:vertical:hover {
    background-color:#32BFD1;
    border: solid 1px #2A8894;
}

Here's a complete JSFiddle Demo.