github-markdown-section-numbering by kyokuheki

/* ==UserStyle==
@name         github-markdown-section-numbering
@version      20240412.13.40
@namespace    https://userstyles.world/user/kyokuheki
@description  github markdown section numbering
@author       kyokuheki
==/UserStyle== */

@-moz-document url-prefix("https://github.com/") {
article.markdown-body {
    counter-reset: h2c h3c h4c h5c h6c;
}

article.markdown-body h1.heading-element {
    counter-set: h2c;
}

article.markdown-body h2.heading-element {
    counter-set: h3c;
    counter-increment: h2c;
}

article.markdown-body h3.heading-element {
    counter-set: h4c;
    counter-increment: h3c;
}

article.markdown-body h4.heading-element {
    counter-set: h5c;
    counter-increment: h4c;
}

article.markdown-body h5.heading-element {
    counter-set: h6c;
    counter-increment: h5c;
}

article.markdown-body h6.heading-element {
    counter-increment: h6c;
}

article.markdown-body h2.heading-element:before {
    content: "[" counter(h2c) "]" "\00a0\00a0\00a0\00a0";
    white-space: pre;
}

article.markdown-body h3.heading-element:before {
    content: "[" counter(h2c) "." counter(h3c) "]" "\00a0\00a0\00a0\00a0";
    white-space: pre;
}

article.markdown-body h4.heading-element:before {
    content: "[" counter(h2c) "." counter(h3c) "." counter(h4c) "]" "\00a0\00a0\00a0\00a0";
    white-space: pre;
}

article.markdown-body h5.heading-element:before {
    content: "[" counter(h2c) "." counter(h3c) "." counter(h4c) "." counter(h5c) "]" "\00a0\00a0\00a0\00a0";
    white-space: pre;
}

article.markdown-body h6.heading-element:before {
    content: "[" counter(h2c) "." counter(h3c) "." counter(h4c) "." counter(h5c) "." counter(h6c) "]" "\00a0\00a0\00a0\00a0";
    white-space: pre;
}
}