.knowledgebase-root .article-header{margin:20px 0 10px}.drive-panel.aside{position:sticky;top:10px;z-index:99}.drive-panel.aside .dx-scrollable-wrapper{max-height:calc(100vh - 30px);overflow-x:hidden;overflow-y:auto;padding-bottom:30px}.drive-panel.aside .dx-state-focused>.dx-treeview-item{background:none;color:#424242}