更新

themes/butterfly/layout/includes/third-party/math/katex.pug

@@ -0,0 +1,7 @@
+link(rel="stylesheet" type="text/css" href=theme.CDN.katex)
+script(src=url_for(theme.CDN.katex_copytex))
+link(rel="stylesheet" type="text/css" href=theme.CDN.katex_copytex_css)
+script.
+  $(function () {
+    $('span.katex-display').wrap('<div class="katex-wrap"></div>')
+  })