CSS controls the height of the Html page to cause jitter. In fact, the root cause of this type of page jitter caused by height is whether the scroll bar is displayed.
Add the following code in CSS:
html,body{ overflow-y:scroll;}
html,body{ overflow:scroll; min-height:101%;}
html{ overflow:-moz-scrollbars-vertical;}
It has been tested and can be implemented. From this it can be concluded that the root cause of this type of page jittering problem caused by height is actually caused by whether the scroll bar is displayed.
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