Button underlines text on hover

Hi CEd
This is a minor cosmetic issue but I'd like to resolve it if possible.
I have three sites recently built or updated to use Page Builder CK and Joomla 4. On two sites the buttons show underlined text on hover, but on the third there is no underline. I don't like the underline but I can't find a way to get rid of it.
There are two differences between these sites that I can see:
1) on the two sites where the text underlines, I have created the buttons using the Style option in Page Builder CK. On the other I have not. However, I have tried deleting one of the buttons and recreating it without using the Style option and the text is still underlined.
2) the two sites where the text underlines use PHP 8 and the other uses 7.4

Site with underlined text: www.catsyouththeatre.org/
Site without underlined text: www.shipstondramagroup.org/

On all three sites I'm using:
Joomla 4.2.8
Page Builder CK 2.8.15 PRO
Helix Ultimate 2.0.11

Thanks for any advice or assistance.
Steve

Hi
the underline comes from
/media/plg_everything_in_everyway_twitter_feed/css/twitter_feed.css
L. 104 on
a:hover span,

it adds the text-decoration
you shall remove it, or add a custom css rule to override it
CEd

Aha! Thank you, CEd. That shouldn't happen so I'll take it up with the suppliers, Joomlashack.
Many thanks
Steve