diff --git a/themes/modern2/assets/css/components/2-layout/responsive.scss b/themes/modern2/assets/css/components/2-layout/responsive.scss
index 2a17333f2..2805662dd 100755
--- a/themes/modern2/assets/css/components/2-layout/responsive.scss
+++ b/themes/modern2/assets/css/components/2-layout/responsive.scss
@@ -253,6 +253,8 @@
         }
         &Input {
             position: relative;
+            max-width: 450px;
+            margin: 0 auto;
             input {
                 width: calc(100% - 60px);
                 height: 50px;
diff --git a/themes/modern2/assets/css/main.css b/themes/modern2/assets/css/main.css
index 70414d84f..38413f249 100755
--- a/themes/modern2/assets/css/main.css
+++ b/themes/modern2/assets/css/main.css
@@ -2258,6 +2258,8 @@ li {
   }
   .searchInput {
     position: relative;
+    max-width: 450px;
+    margin: 0 auto;
   }
   .searchInput input {
     width: calc(100% - 60px);