滚动条悬浮加粗效果

&::-webkit-scrollbar {
  height: 8px;
}
&::-webkit-scrollbar-track {
  background-color: #fff;
}
&::-webkit-scrollbar-thumb{
  border-radius: 10px;
  border-style: dashed;
  border-color: transparent;
  border-width: 4px;
  background-color: rgba(202, 214, 244, 0.4);
  background-clip: padding-box;
}
&::-webkit-scrollbar-thumb:hover {
  background: #CAD6F4;
  border-width: 20px;
}