diff --git a/app/assets/stylesheets/filters.css b/app/assets/stylesheets/filters.css
index 22c40342c..c51e5520b 100644
--- a/app/assets/stylesheets/filters.css
+++ b/app/assets/stylesheets/filters.css
@@ -124,6 +124,10 @@
       margin-inline-end: calc((var(--btn-size) + var(--inline-space-half) + 0.25em) * -1);
       min-inline-size: calc(var(--input-width) + (0.25 * var(--collapsed-filter-space)));
     }
+
+    @media (max-width: 479px) {
+      --input-width: 100%;
+    }
   }
 
   .filter-toggle {
@@ -150,9 +154,6 @@
       display: none !important;
     }
 
-    @media (max-width: 80ch) {
-      display: none;
-    }
   }
 
   .filters:not(.filters--expanded) {