This feature was not working correctly on most of the styles in our Style Gallery. Earlier today the Style Gallery was updated to properly manage the CSS that works with this feature.
To re-download the style go to Store Locator Plus (Advanced Options for MySLP users) | Settings | View and select a different style than you are using now. Then re-select the style you are using to force a download of the latest settings and CSS styles.
Note: if you have modified ANY of the layout settings you will want to save those changes by copying them to a separate application such as a code editor or local text editor first so you can re-apply the changes if you re-download the style from our Style Gallery server.
Proper styling of your store locator is one of the key components in creating a solid user experience on your site. All of the Store Locator Plus® offerings include access to our pre-defined library of CSS styles.
Clients that are using the Professional or Enterprise level of service also get the added advantage of advanced page structure layouts. The page structure are changes to the underlying HTML that is output on the page, providing the skeleton for the locator layout. Moving the search results to the left or right side of the map instead of below it, for example. While you can accomplish this with CSS rules alone, it takes a lot more CSS customization if the underlying HTML structure is pushing a significantly different layout.