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To copy the banner...

Decide on the page on your site you want the link to be in and
  make a note of the folder that the page is in.
(PC) Right-click the banner, select "save picture as", navigate
  to the folder you made a note of and click "save".
(Mac) Click the banner, hold the button down and select
  "save as", navigate to the folder you made a note of and click
  "save".

To copy the code...

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