I do not think so. But you could add a small copyright line at the bottom of your site. And if you are concerned about copyright infringement, register your website with the US (assuming this is a US location) with the Copyright Office. You can do it online at https://www.copyright.gov/
The benefit of a registered copyright is: should you need to litigate to protect your copyrighted content, and if you win, the violator has to pay the court costs. It's worth every penny to register your copyright.
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