You can adjust the following category styles. Remove any line to revert it back it’s default value.
/**
* Collection Carousel
* Tag Styles
* From Will-Myers.com
**/
[data-wm-plugin="collection-carousel"] {
--wm-cc-tag-background-color: #777;
--wm-cc-tag-border-radius: 5rem;
--wm-cc-tag-border-width: 1px;
--wm-cc-tag-border-style: solid;
--wm-cc-tag-border-color: black;
--wm-cc-tag-color: white;
--wm-cc-tag-font-size: 13px;
--wm-cc-tag-padding: 4px 8px;
}To hide the tag comma, use this CSS
/**
* Collection Carousel
* Tag Styles
* From Will-Myers.com
**/
[data-wm-plugin="collection-carousel"] .tag-delimiter{
display: none;
}