diff --git a/src/drivers/webextension/css/styles.css b/src/drivers/webextension/css/styles.css
index 89c7fe404..2bb1a2046 100644
--- a/src/drivers/webextension/css/styles.css
+++ b/src/drivers/webextension/css/styles.css
@@ -31,6 +31,12 @@ body {
   width: 34rem;
 }
 
+@media (max-width: 34rem) {
+  .body__popup {
+    width: 100%;
+  }
+}
+
 a, a:focus, a:hover {
   color: var(--color-primary);
   outline: none;