Greetings, I'm working with popups in an ESRI Javascript API 3.18 bootstrapmap.js map and my popups are not styling correctly. It appears to me like I am missing both the minimize and maximize buttons and the popup pointers appear to not be drawing correctly. See below:

Initially the popup titlePane was white and the close button was invisible. I followed the directions at Making Your Pop-up Pop! | ArcGIS Blog and copied the css from http://serverapi.arcgisonline.com/jsapi/arcgis/3.1/js/esri/dijit/css/Popup.css and that got me this far. How do I take this the rest of the way?
Thanks, Tyler