http://stovoxeobzeebmcgomjymnk73vcarxkikwo26lvfbaxmxbtjbe7umnid.onion/questions/491052/minimum-and-maximum-value-of-z-index
html,output https://jsbin.com/qakegup/edit?html,output You don't need z-index z-index is dangerous: It is infectious: If one tag gets z-index, more tags will be infected in order to override the old one. It will inflate: If one tag gets z-index: 1 ;, more tags will have to use z-index: 2; , z-index: 3; ... z-index: max || min; , Boom!.