-webkit-scrollbar with default style not set where on apply

That make google maps infowindow custom scroll corner colors.

So how i can apply just for main scrollbar on website? I mean not in any div? (remove from google maps info window corner) I basicly not set it on any element like .mostly-customized-scrollbar class or #id just have set

::-webkit-scrollbar {
  width: 5px;
  height: 8px;
  background-color: #aaa; /* or add it to the track */
}