:: - webkit-scrollbar integral part of the scroll bar
:: - webkit-scrollbar-thumb scroll bar inside the small box, can be moved upward downward (moved to the left or right, depending on whether the vertical scroll bar is a horizontal scroll bar)
:: - webkit-scrollbar-track of the scroll bar track (which is equipped with Thumb)
:: - at both ends of the track buttons webkit-scrollbar-button scroll bar that allows fine-tuning the position by clicking on the small square.
:: - webkit-scrollbar-track-piece inner orbit scroll bar intermediate portion (removed)
:: - webkit-scrollbar-corner edges, that is the intersection of two scrollbars
:: - for adjusting the size of the element by dragging widgets on the corner of webkit-resizer two scroll bars
Mobile terminal hide scroll the scroll bar: -webkit-scrollbar