a

src/app.scss

@@ -9,7 +9,7 @@ h2 {
 }
 
 h3 {
-  font-size: 1.2em !important;
+  font-size: 1em !important;
 }
 
 body, button, input, select, textarea, .content{

src/lib/Codespan.svelte

@@ -14,8 +14,8 @@
             {left: '$', right: '$', display: false},
             {left: '$$', right: '$$', display: true}
         ],
-        throwOnError : false
-        // output: "mathml"
+        throwOnError : false,
+        output: "html"
       })
     renderedMath = dummy.innerHTML;
     dummy.remove();