Adjust the borders of each item and the spacing between each item.
/**
* Accordion Item Styles
* From Will-Myers.com
**/
[data-wm-plugin="accordions"] {
--wm-accordion-item-space-between: 14px;
--wm-accordion-item-border-width: 1px;
--wm-accordion-item-border-style: solid;
--wm-accordion-item-border-color: #333;
--wm-accordion-item-border-radius: 14px;
}