Thank you for reaching out to the Community. That is a great question! The Event widget generates a source code for you, and you can edit styles using the CSS to match your website. You can click here for further instructions. If you aren't comfortable making the changes, we usually suggest sending the request to your webmaster that should be able to alter the CSS stylesheet for you.
In the meantime, if you have any further questions please feel free to reach out to us here. We are always happy to assist you in any way we can!
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