diff --git a/theme/assets/css/main.css b/theme/assets/css/main.css
index e72205a..484b548 100644
--- a/theme/assets/css/main.css
+++ b/theme/assets/css/main.css
@@ -574,6 +574,9 @@ p:last-child { margin-bottom: 0; }
     padding: .5rem 0 .5rem .75rem;
     margin-top: .5rem;
     display: none;
+    min-width: 0;
+    width: 100%;
+    left: auto;
   }
   .site-nav.open .nav-menu .sub-menu::before { display: none; }
   .site-nav.open .nav-menu > li.menu-item-has-children.submenu-open > .sub-menu {
@@ -583,6 +586,8 @@ p:last-child { margin-bottom: 0; }
     font-size: 1rem;
     padding: .4rem .75rem;
     color: var(--color-text);
+    white-space: normal;
+    display: block;
   }
   .site-nav.open .nav-menu .sub-menu a:hover {
     color: var(--color-primary);