first commit

layout/includes/third-party/canvas-ribbon-piao.pug

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+script(id="ribbon" src=url_for('https://cdn.jsdelivr.net/gh/jerryc127/CDN@latest/js/piao.js'))

layout/includes/third-party/canvas-ribbon.pug

@@ -0,0 +1,3 @@
+script(id="ribbon" src=url_for('/js/third-party/canvas-ribbon.js') size=theme.canvas_ribbon.size
+alpha=theme.canvas_ribbon.alpha zIndex=theme.canvas_ribbon.zIndex data-click=`${theme.canvas_ribbon.click_to_change}`)
+

layout/includes/third-party/katex.pug

@@ -0,0 +1,7 @@
+link(rel="stylesheet" type="text/css" href=theme.katex.cdn.css)
+script(src='https://cdn.jsdelivr.net/npm/katex-copytex@latest/dist/katex-copytex.min.js')
+link(rel="stylesheet" type="text/css" href='https://cdn.jsdelivr.net/npm/katex-copytex@latest/dist/katex-copytex.min.css')
+script.
+  $(function () {
+    $('span.katex-display').wrap('<div class="katex-wrap"></div>')
+  })