Scrollbar thumb height in css

问题

Is the height of scroll thumb set as default according to scroll-able area? If not, can I set scrollbar thumb height? If it is possible how? I tried to do it the following way.

body::-webkit-scrollbar-thumb {
  background-color: darkgrey;
  outline: 1px solid slategrey;
  height: 5px;
}

But it have no impact on the page. Please help. Thanks in advance.

回答1:

I don't think so, the height of the thumb is based in the size of content, you can change the width inside the ::-webkit-scrollbar but the height will always be based on the content.

::-webkit-scrollbar              { /* 1 */ }
::-webkit-scrollbar-button       { /* 2 */ }
::-webkit-scrollbar-track        { /* 3 */ }
::-webkit-scrollbar-track-piece  { /* 4 */ }
::-webkit-scrollbar-thumb        { /* 5 */ }
::-webkit-scrollbar-corner       { /* 6 */ }
::-webkit-resizer                { /* 7 */ }

Source

来源：https://stackoverflow.com/questions/45755144/scrollbar-thumb-height-in-css