In case anyone else was confused, Fabric is also the name of the CSS framework from Microsoft for developing Office 365 add-ins. <a href="https:&#x2F;&#x2F;blogs.office.com&#x2F;2015&#x2F;08&#x2F;31&#x2F;introducing-office-ui-fabric-your-key-to-designing-add-ins-for-office&#x2F;" rel="nofollow">https:&#x2F;&#x2F;blogs.office.com&#x2F;2015&#x2F;08&#x2F;31&#x2F;introducing-office-ui-fa...</a>