Thanks, that's very helpful! Am I pasting the below as is in the HTML source editor or editing the form's custom CSS?
Neither. This code would go in a separate <script> tag, after the form embed code. On a Marketo LP, that means just before the closing </body> tag.
Which elements within this code am I replacing with my French LP url?
You don’t put the LP URL itself anywhere in the code. But the expectation is your <a> tag that links to the French LP has a known id attribute, like
<a id="page-french" href="https://pages.example.com/french.html">go elsewhere</a>
That’s how the code knows what link to update. It does not need to know the URL.
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