Style the widget with your own CSS
Target the widget safely
Every widget element sits under the .sl-widget wrapper and widget classes start with sl-. For example, .sl-widget .sl-list-item { border-radius: 10px; } rounds each store row.
Custom rules load after the widget styles, so they win when specificity is equal without requiring !important.
Saving and limits
Paste plain CSS into the Custom CSS page. The stylesheet must remain under 50,000 characters and cannot contain script or style tags.
Saved CSS reaches the storefront within about one minute because the widget configuration is cached.