Exporting a single note has same style as mentioned in userstyle.css. But If I export an entire notebook, the css style is not preserved.
The font family that I've put in userstyle.css is Calibri. And WYSIWYG editor is also showing correct font family (Calibri).
But after I exporting the entire notebook as html directory. Font family in the exported HTML has been changed to Arial. Below image is from my chrome.
