follow the instructions on a blog post to modify the checkbox default style:
(blog address: https://www.cnblogs.com/GumpY.)
effect: 
:
1-checkbox 0z-index2checkbox
2-checkbox
3-checkboxcheckbox
OK:
.............
===============================
1-checkboxcheckbox; "" checkbox
2-consolecheckbox
3-however, clicking on the selected checkbox, again will not return to the box state.
=
solve TT.
seems simple. You can try it at here . The code is as follows:
HTML:
https://www.cnblogs.com/GumpY. is wrong to set checkbox to absolute,!
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