Get your beauty sleep. Get plenty of sleep nightly. Itâs not entirely clear why inadequate sleep results in dark circles under the eyes, but lack of sleep tends to cause the skin to become paler (thus increasing the appearance of darkness under the eyes), and reduces circulation. Itâs also believed that too little time lying down is a cause in itself.
Style Library is located on the top level publishing web site. So you need to enable the publishing feature on the root site as well.
But at first we need to activate the document set feature in SharePoint if not already done. In the site settings you should go to the Site Collection features link and activate the document set feature. After that you can add the document set content type to your library. This post helps you.