[#5339] Minor style tweak to remove attachment button

Signed-off-by: Cory Johns <johnsca@geek.net>
diff --git a/Allura/allura/nf/allura/css/site_style.css b/Allura/allura/nf/allura/css/site_style.css
index 4c0643b..1b28457 100644
--- a/Allura/allura/nf/allura/css/site_style.css
+++ b/Allura/allura/nf/allura/css/site_style.css
@@ -2180,6 +2180,7 @@
 div.attachment_thumb {
   float: left;
   margin: .5em;
+  margin-right: 1.5em;
   position: relative;
   padding: 10px;
 }