diff --git a/app/models/block.rb b/app/models/block.rb
index c007686..eb4dd30 100644
--- a/app/models/block.rb
+++ b/app/models/block.rb
@@ -21,7 +21,7 @@ class Block < ActiveRecord::Base
   end
 
   def embed_code(url)
-    html = "<iframe src='#{url}' frameborder='0'></iframe>"
+    html = "<iframe src='#{url}' frameborder='0' width='1024' height='768' class='embed block #{self.class.name.to_css_class}'></iframe>"
   end
 
   # Determines whether a given block must be visible. Optionally a
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libgit2 0.21.2