一级标题

1 二级标题

1.1三级标题

1.1.1四级标题

1.1.1.1 五级标题

1.1.1.1.1 六级标题

代码保存为base.user.css并保存在主题目录下。

/** initialize css counter */
#write, .sidebar-content,.md-toc-content {
    counter-reset: h1
}

#write h1, .outline-h1, .md-toc-item.md-toc-h1  {
    counter-reset: h2
}

#write h2, .outline-h2, .md-toc-item.md-toc-h2 {
    counter-reset: h3
}

#write h3, .outline-h3, .md-toc-item.md-toc-h3 {
    counter-reset: h4
}

#write h4, .outline-h4, .md-toc-item.md-toc-h4 {
    counter-reset: h5
}

#write h5, .outline-h5, .md-toc-item.md-toc-h5 {
    counter-reset: h6
}

/** put counter result into headings */
#write h2:before, 
h2.md-focus.md-heading:before,
.outline-h2>.outline-item>.outline-label:before,
.md-toc-item.md-toc-h2>.md-toc-inner:before{
    counter-increment: h2;
    content: counter(h2) " "
}

#write h3:before, 
h3.md-focus.md-heading:before,
.outline-h3>.outline-item>.outline-label:before,
.md-toc-item.md-toc-h3>.md-toc-inner:before{
    counter-increment: h3;
    content: counter(h2) "." counter(h3) " "
}

#write h4:before,
h4.md-focus.md-heading:before,
.outline-h4>.outline-item>.outline-label:before,
.md-toc-item.md-toc-h4>.md-toc-inner:before {
    counter-increment: h4;
    content: counter(h2) "." counter(h3) "." counter(h4) " "
}

#write h5:before,
h5.md-focus.md-heading:before,
.outline-h5>.outline-item>.outline-label:before,
.md-toc-item.md-toc-h5>.md-toc-inner:before  {
    counter-increment: h5;
    content: counter(h2) "." counter(h3) "." counter(h4) "." counter(h5) " "
}

#write h6:before,
h6.md-focus.md-heading:before,
.outline-h6>.outline-item>.outline-label:before,
.md-toc-item.md-toc-h6>.md-toc-inner:before  {
    counter-increment: h6;
    content: counter(h2) "." counter(h3) "." counter(h4) "." counter(h5) "." counter(h6) " "
}

#write h7:before,
h7.md-focus.md-heading:before,
.outline-h7>.outline-item>.outline-label:before,
.md-toc-item.md-toc-h7>.md-toc-inner:before {
    counter-increment: h7;
    content:  counter(h2) "." counter(h3) "." counter(h4) "." counter(h5) "." counter(h6)". counter(h7) " "
}

/** override the default style for focused headings */
#write>h3.md-focus:before,
#write>h4.md-focus:before,
#write>h5.md-focus:before,
#write>h6.md-focus:before,
h3.md-focus:before,
h4.md-focus:before,
h5.md-focus:before,
h6.md-focus:before {
    color: inherit;
    border: inherit;
    border-radius: inherit;
    position: inherit;
    left:initial;
    float: none;
    top:initial;
    font-size: inherit;
    padding-left: inherit;
    padding-right: inherit;
    vertical-align: inherit;
    font-weight: inherit;
    line-height: inherit;
}