CSS Hide Page element method

First, CSS hidden page box

Overflow:hidden; Hide box out of the part, overflow hidden

Position:absolute;  /left/top...-999px; Set the position to invisible area, hide the box, and occupy the position.

opacity:0; Hidden boxes also occupy the original position after hiding.

Visibility:hidden; Hidden boxes also occupy the original position after hiding.

Display:none; Hidden boxes do not occupy the original position after hiding.

Display:block; Element visible

Display:none and Display:block often cooperate with JS.

Second, the content of the CSS removal (web optimization)

Text-indent:-5000em; Moves the text out of the invisible area.

Set the element height to 0, use the inner margin to open the box, use Overflow:hidden for the box, and hide the text.

CSS Hide Page element method