diff --git a/app/assets/stylesheets/common.scss b/app/assets/stylesheets/common.scss
index 8128e3c79..40145e9f9 100644
--- a/app/assets/stylesheets/common.scss
+++ b/app/assets/stylesheets/common.scss
@@ -49,6 +49,11 @@ a {
   color: $blue;
 }
 
+a[target="_blank"]::after {
+  content: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAQElEQVR42qXKwQkAIAxDUUdxtO6/RBQkQZvSi8I/pL4BoGw/XPkh4XigPmsUgh0626AjRsgxHTkUThsG2T/sIlzdTsp52kSS1wAAAABJRU5ErkJggg==);
+  margin: 0 3px 0 5px;
+}
+
 em {
   font-style: italic;
 }