Customizing success message on form block

Hi there. I’m having difficulty removing an unsightly border on a success message on a form block. Normally I can change the settings under the gears cog then the success tab on the form block. But in editor mode there is nothing showing. Then on the published site, the weird border reappears. Any suggestions?

Many Thanks.

Here is my site Read-Only: [LINK]1
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Just to add, this is how it is showing in editor mode on webflow?

Hi, Did you try to remove border from success message class?

Hi nkatla. Yes I went into this element and checked borders on all break points, and no border shows at all. Yet when testing the form it comes up with this horrid border. I have to form pages and both are the same. It’s odd as it’s normally been ok. Has anything changed with the standard block form?