css: commonly used scroll bar style, this is enough, the rest is to add the prefix

/* 滚动条修改 */
._scroll_::-webkit-scrollbar {
  width: 8px;
}
._scroll_::-webkit-scrollbar-thumb {
  border-radius: 10px;
  -webkit-box-shadow: inset 0 0 5px #DCDCDC;
  background: #DCDCDC;
}
._scroll_::-webkit-scrollbar-track {
  -webkit-box-shadow: inset 0 0 5px #EEEEEE;
  border-radius: 0;
  background: #EEEEEE;
}