If you want to add buttons for Facebook, Twitter, Instagram, etc to a webpage, you need to add an HTML widget to your page first and then copy in the code provided by the social sharing network of your choice.
Please keep in mind that while the code may work now, we cannot guarantee that it will continue to work in the future. Codes can become obsolete and/or conflict with the enhancements made to provide you with the best Sitebuilder possible.
For more information on how to improve the SEO of your site check out this tutorial.
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