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.
"I knew these were our invitations when I first saw them. They're such a excellent complement to our theme and venue (art gallery). Customer service was awesome and I received everything before the arrival date. Will definitely order from Wedding Paper Divas again!"
"We opted for a navy background printed on shimmery paper. They are beautiful and we are thrilled. I never expected to have such dreamy invitations!"