contrib/html: add a class and shadow for notifications

contrib/html.sh

@@ -17,6 +17,7 @@ markdown -f toc,idanchor "${1}" | sed \
 	-e '/<h[1234] /s|-2[1789cd]-||g' \
 	-e '/<h[1234] /s|-3[f]-||g' \
 	-e '/^<pre>/s|pre|pre class="code" onclick="CopyToClipboard(this)"|g' \
+	-e '/<img src=".*" alt="notification: .*" \/>/s|alt="\(.*\):|class="\1" alt="\1:|' \
 	-e '/The above link may be broken on code hosting sites/s|blockquote|blockquote style="display: none;"|'
 
 sed \

general/style.css

@@ -42,6 +42,9 @@ div.content {
 hr {
   clear: both;
 }
+img.notification {
+  box-shadow: 3px 3px 7px rgba(100,100,100,0.7);
+}
 img.logo {
   float: left;
   /* border-radius: 50%; */