chore reduced image size, increases ttfX

src/res/css/extra_styles.css

@@ -282,6 +282,11 @@ markdown-dom pre code
   white-space: initial!important;
 }
 
+.mw-400px
+{
+  max-width: 400px!important;
+}
+
 .mw-100
 {
   max-width: 100%!important;