Tooltips not displaying as they should

I am getting an issue where the tooltips are not displaying as they should – like on http://demo.oscitasthemes.com/efs/ and http://foundation.zurb.com/docs/components/tooltips.html

Instead I am getting the browser default style of Title Attribute – the tooltip is showing, but without the styling.
Is there something I need or can add to the stylesheet?

https://wordpress.org/plugins/easy-foundation-shortcodes/