Bug 1904084 - Style the navigation breadcrumbs bar consistently. r=frg

src/css/artemia/template.css

@@ -47,11 +47,16 @@ img { border: 0; }
 /* breadcrumbs */
 
 #breadcrumbs {
-  background: #000089 url("/images/template/breadcrumbs-background.png") bottom repeat-x;
   padding-top: 4px;
-  padding-bottom: 30px;
+  padding-bottom: 4px;
   font-size: 85%;
   color: #C8E0FA;
+  background-color: #000089;
+  background-image: linear-gradient(to bottom, #000089 0%, #000089 15%, #30309f 99%, #000089 100%);
+  height: 16px;
+  margin-bottom: 2em;
+  box-shadow: 0px 0px 24px 0px rgba(0,0,0,0.15);
+  border-bottom: 1px solid #000089;
 }
 
 #breadcrumbs a:link,