diff --git a/web/app/views/main-nav.php b/web/app/views/main-nav.php
index ee105d3..741d50e 100644
--- a/web/app/views/main-nav.php
+++ b/web/app/views/main-nav.php
@@ -109,7 +109,7 @@
 				</li>
 			</ul>
 			<?php if (isset($REQUIRE_LIB['bootstrap5'])): ?>
-			<hr class="d-lg-none text-white-50">
+			<hr class="d-lg-none text-muted">
 			<ul class="nav navbar-nav ms-md-auto">
 				<li class="nav-item dropdown">
 					<a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">