[#8112] highlight specific comment when the URL targets it

Allura/allura/nf/allura/css/site_style.css

diff --git a/Allura/allura/nf/allura/css/site_style.css b/Allura/allura/nf/allura/css/site_style.css
index 026d902..686d6a1 100644
--- a/Allura/allura/nf/allura/css/site_style.css
+++ b/Allura/allura/nf/allura/css/site_style.css
@@ -3711,6 +3711,13 @@
     border-right-color: #e5e5e5;
 }
 
+:target > .row > .post-content {
+    border-color: black;
+}
+:target > .row > .bubble::before {
+    border-right-color: black;
+}
+
 .discussion-post .row .emboss{
     box-shadow: rgba(0, 0, 0, 0.0) 0 1px 5px 0;
     -webkit-box-shadow: rgba(0, 0, 0, 0.0) 0 1px 5px 0;