css 使用CSS计数器编号的自动标题

Posted 2021-05-13

/*From here http://philarcher.org/diary/2013/headingnumbers/*/

body {counter-reset: h2} /*you may set any container instead of body that will limit the action, like article*/
h2 {counter-reset: h3}
h3 {counter-reset: h4}
h4 {counter-reset: h5}
h5 {counter-reset: h6}
h2:before {counter-increment: h2; content: counter(h2) ". "}
h3:before {counter-increment: h3; content: counter(h2) "." counter(h3) ". "}
h4:before {counter-increment: h4; content: counter(h2) "." counter(h3) "." counter(h4) ". "}
h5:before {counter-increment: h5; content: counter(h2) "." counter(h3) "." counter(h4) "." counter(h5) ". "}
h6:before {counter-increment: h6; content: counter(h2) "." counter(h3) "." counter(h4) "." counter(h5) "." counter(h6) ". "}
h2.nocount:before, h3.nocount:before, h4.nocount:before, h5.nocount:before, h6.nocount:before {content: ""; counter-increment: none}