html,body{overflow:hidden}.portal-shell{height:100vh;height:100dvh;display:grid;grid-template-rows:var(--header-height) minmax(0,1fr);overflow:hidden}.portal-body{min-height:0;display:flex;align-items:stretch;overflow:hidden}.portal-body>#primary-navigation-root,.portal-body>#context-navigation-root{height:100%;min-height:0;display:flex;flex:0 0 auto}.portal-body>#context-navigation-root:empty{display:none}