Fehlerhafte Darstellungen im Edge

[einsiedler]

Geht DAS in die richtige Richtung?

<a class="anzume" href="#main-nav">zum Hauptmenü</a>
				<nav id="main-nav">
				<button aria-controls="exp_MainMenu" aria-expanded="false"> </button>
					<ul id="exp_MainMenu" aria-labelledby="label_exp_MainMenu">

						<li>
							<a class="a-link" href="http://XXX.html">Aktuelles</a>
							<button aria-controls="exp_SubMenu_1" aria-expanded="false"> </button>
							<div id="exp_SubMenu_1" aria-labelledby="label_exp_SubMenu_1" class=nav-group>
								<a class="a-sublink" href="http://XXX.html">aktuelle Ausstellungen</a>
							</div>
						</li>

						<li>
							<a class="a-link" href="http://XXX.html">Arbeiten</a>
							<button aria-controls="exp_SubMenu_2" aria-expanded="false"> </button>
							<div id="exp_SubMenu_2" aria-labelledby="label_exp_SubMenu_2" class=nav-group>
								 <a class="a-sublink" href="XXX.html">Drifters, 2012</a>
								 <a class="a-sublink" href="XXX.html">Waldfrieden, 2006</a>
							</div>
						</li>