You won't be able to dismiss this by usual means (escape or click button), but you can close it programatically based on user choices or actions.
"These thank you cards are so adorable! I was very excited to send them out, and I know my guests will be pleased to receive them. It is a smaller card, but the pictures still looked beautiful! The quality is awesome. The cards came quickly too, a week before the delivery date! I was excited to send them out earlier than I planned! Thank you wedding paper divas again for an awesome product and service."
"By not putting "thank you" on these we are now ablt to use then for ANYTHING. great when u go to a wedding and need a last minute gift card! The quality is better than expected. Very happy with the final product."