tegory="header" data-ga-event-action="dark" title="Toggle light/dark theme"><span class="MuiIconButton-label"><svg class="MuiSvgIcon-root" focusable="false" viewBox="0 0 24 24" aria-hidden="true"><path d="M20 8.69V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12 20 8.69zM12 18c-.89 0-1.74-.2-2.5-.55C11.56 16.5 13 14.42 13 12s-1.44-4.5-3.5-5.45C10.26 6.2 11.11 6 12 6c3.31 0 6 2.69 6 6s-2.69 6-6 6z"></path></svg></span></button><button class="MuiButtonBase-root MuiIconBu