How to prevent the page from jumping when the page scroll bar appears

premise:

1. Need to be compatible with ie8
2. The height of the page depends on the content (that is, whether it is a fixed height)

Question:
Modern browser scroll bars default to theoverflow:autotype, but now you need to define an element to the right
(.tips{

position: fixed; right: 0; top: 100px; z-index: 10; height: 250px; width: 300px;

}), when the content height is enough, the page will flicker,tipsThe right side of the element will be hidden by a width (the width of the scroll bar). Is there any way to solve this?