How to remove shadow from Ira theme's sticky header?

Store Design
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Hey,

Anyone got code to remove the shadow from the sticky header on the Ira theme? I wanted it to behave like the sticky headers on the free themes instead.

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Go to Online store > Themes > Edit code > open theme.liquid file, add this code under and save file
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It appears to work but it now displays this message. Is that a problem?

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This is a noty, not error message

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Okay. Because, it is up to date and it only appeared after editing the code.

Edit: it went away after I published it.