scrollbar-hover-active.html - Android社区 - https://www.androidos.net.cn/

<head>
<style>
div::-webkit-scrollbar {
  width:17px;
  height:17px;
}

div::-webkit-scrollbar-button {
  display: block;
  width: 17px;
  height: 17px;
}

div::-webkit-scrollbar-button:-webkit-decrement:-webkit-start {
  background-color:lightblue;
  border:2px solid black;
}

div::-webkit-scrollbar-button:-webkit-increment:-webkit-start {
  background-color:lightgreen;
  border:2px solid black;
}

div::-webkit-scrollbar-button:-webkit-decrement:-webkit-end {
  background-color:orange;
  border:2px solid black;
}

div::-webkit-scrollbar-button:-webkit-increment:-webkit-end {
  background-color:brown;
  border:2px solid black;
}

div::-webkit-scrollbar-button:hover {
  background-color:black !important;
}

div::-webkit-scrollbar-thumb {
  min-width:20px;
  min-height:20px;
  background-color: navy;
  border:2px solid #cccccc;
}

div::-webkit-scrollbar-track {
  background-color: pink;
}

div::-webkit-scrollbar-thumb:hover {
  background-color: green;
}

div::-webkit-scrollbar-thumb:active {
  border:3px dotted white;
}

div::-webkit-scrollbar-track:hover {
  background-color: maroon;
}

</style>
</head>
<body>
<div style="width:200px; height:200px; overflow-y:scroll; overflow-x:hidden">
Hello<br>
Hello<br>Hello<br>Hello<br>Hello<br>Hello<br>Hello<br>Hello<br>
Hello<br>Hello<br>Hello<br>Hello<br>
Hello<br>Hello<br>Hello<br>Hello<br>
<span style="white-space:nowrap">Hello world this is a long string and will not wrap.</span>
Hello<br>Hello<br>Hello<br>Hello<br>
Hello<br>Hello<br>Hello<br>Hello<br>Hello<br>Hello<br>
Hello<br>Hello<br>Hello<br>Hello<br>
Hello<br>Hello<br>Hello<br>Hello<br>Hello<br>Hello<br>
Hello<br>Hello<br>Hello<br>Hello<br>
Hello<br>Hello<br>Hello<br>
</div>