CODICE VECCHIO
<iframe width="560" height="315" src="https://www.youtube.com/embed/UaXN3nWlxtE?si=dXFe3lQSFYXac6Tp" title="YouTube video player" frameborder="0" allowfullscreen=""></iframe>CODICE NUOVO (uguale a prima ma con referrerpolicy=”strict-origin-when-cross-origin”)
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