html: Render headline priority

README.org

@@ -8,7 +8,6 @@ Take a look at [[https://niklasfasching.github.io/go-org/][github pages]] for so
     [[/images/org-mode-unicorn-logo.png]]
 - more keywords: https://orgmode.org/manual/In_002dbuffer-settings.html
 - headlines
-  - export priority as default
   - unique ids
     - CUSTOM_ID drawer property
     - see [[https://github.com/kaushalmodi/ox-hugo/blob/8472cf2d8667754c9da3728255634e8001a1da6d/ox-hugo.el#L1785-L1850][ox-hugo]] for auto generation

etc/style.css

@@ -113,3 +113,8 @@ figcaption {
 dl { font-family: monospace, monospace; }
 dl > dt { font-weight: bold; }
 dl > dd { margin: -1em 0 1em 1em; }
+
+.todo, .priority, .tags {
+  font-size: 0.8em;
+  color: lightgrey;
+}

org/html.go

@@ -197,6 +197,10 @@ func (w *HTMLWriter) writeHeadline(h Headline) {
 	if h.Status != "" {
 		w.WriteString(fmt.Sprintf(`<span class="todo">%s</span>`, h.Status) + "\n")
 	}
+	if h.Priority != "" {
+		w.WriteString(fmt.Sprintf(`<span class="priority">%s</span>`, h.Priority) + "\n")
+	}
+
 	w.WriteString(title)
 	if len(h.Tags) != 0 {
 		tags := make([]string, len(h.Tags))

org/testdata/headlines.html

@@ -3,6 +3,7 @@ Simple Headline
 </h1>
 <h1>
 <span class="todo">TODO</span>
+<span class="priority">B</span>
 Headline with todo status &amp; priority
 </h1>
 <h1>
@@ -13,6 +14,7 @@ Headline with TODO status
 the <strong>content</strong>
 </p>
 <h1>
+<span class="priority">A</span>
 Headline with tags &amp; priority&#xa0;&#xa0;&#xa0;<span class="tags"><span>foo</span>&#xa0;<span>bar</span></span>
 </h1>
 <p>