try to fix menu

core/layouts/default/header.tpl

@@ -14,7 +14,7 @@
 			<div class="container">
 				<!-- Brand and toggle get grouped for better mobile display -->
 				<div class="navbar-header">
-					<div class="logo-section" style="width: 40px;">
+					<div class="logo-section" style="width: 40px; display:flex;">
 						<button type="button" class="navbar-toggler" data-toggle="collapse" id="navbar-side-toggle">
 							<span></span>
 						</button>