Hi there,
Please try these methods and tell us if they helped:
Regenerate the CSS via Elementor > Tools > Regenerate CSS on your WordPress Dashboard.
Go to Elementor > Settings on your WordPress dashboard, then Click the Advanced tab and then switch the CSS print method to Internal embedding.
Clear all cache: your browser’s cache, other plugins’ cache, server cache (if possible).
To rule out the possibility of a plugin or theme conflict, please deactivate all your plugins (besides Elementor) and see if it helps. If it solves the issue, reactivate them one by one to find the culprit.
If it didn’t help, switch your theme (temporarily) to a default WordPress theme and see if it makes any difference.
Switch the CSS print method back after following these steps, regardless if it helped or not.
Hope those steps will help you, they go over the most common culprits for issues like yours.
Kind regards,