optical illusions

http://editor.wix.com/html/editor/web/renderer/edit/d2286222-a5a0-4101-ace0-5c3330662816?metaSiteId=1295643b-2873-ca29-abce-6920c8b5622d&editorSessionId=B4B8482F-42C8-40BE-9F04-992C2E1C6634#

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