diff --git a/style/web/components/input/_index.less b/style/web/components/input/_index.less
index 471e8d4ae0..53a8b5a9b6 100644
--- a/style/web/components/input/_index.less
+++ b/style/web/components/input/_index.less
@@ -54,6 +54,7 @@
     border: none;
     outline: none;
     padding: 0;
+    width: 100%;
     max-width: 100%;
     min-width: 0;
     color: @input-text-color-default;