Scrollbar track thinner than thumb

Question

I am trying to style a scrollbar using css and I want to achieve the following look (ignore the background):

In other words, I want the thumb to be thicker than

Answer 1

::-webkit-scrollbar-track{background-image:url("https://i.imgur.com/s19YkhR.png");background-position:center}
::-webkit-scrollbar-track:horizontal{background-repeat:repeat-x}
::-webkit-scrollbar-track:vertical{background-repeat:repeat-y}

This solution is based on @Nizar's approach but works for both Horizontal and Vertical scrollbars using 1 image. The image is a 2x2 which is reduced from a 8x2 from Nizar's approach. This utilizes :horizontal and :vertical selectors. But do note there may be browser incompatibility i'm unsure.

The image can be any size, 2x2, 1x1, e.t.c it essentially defines the size of the line. A 2x2 will just be a 2 pixel depth line.