diff --git a/packages/antd/src/form-item/style.less b/packages/antd/src/form-item/style.less
index 13b9a1cb692..602f8625db1 100644
--- a/packages/antd/src/form-item/style.less
+++ b/packages/antd/src/form-item/style.less
@@ -75,7 +75,7 @@
         }
     }
 
-    
+
     .@{ant-prefix}-select,
     .@{ant-prefix}-cascader-picker,
     .@{ant-prefix}-picker {
@@ -247,13 +247,14 @@
     .@{ant-prefix}-select-single:not(.@{ant-prefix}-select-customize-input) .@{ant-prefix}-select-selector {
         padding: 0px 7px;
         height: @form-item-margin-bottom;
-      
-       .@{ant-prefix}-select-selection-search-input{
-          height: @height-sm - 2;
-       }
-      .@{ant-prefix}-select-selection-item{
-         line-height: @height-sm - 2;
-       }
+
+        .@{ant-prefix}-select-selection-search-input {
+            height: @height-sm - 2;
+        }
+
+        .@{ant-prefix}-select-selection-item {
+            line-height: @height-sm - 2;
+        }
     }
 
 }
@@ -472,6 +473,7 @@
 }
 
 .@{form-item-cls}-error {
+
     .@{ant-prefix}-select-selector,
     .@{ant-prefix}-cascader-picker,
     .@{ant-prefix}-picker,
@@ -482,6 +484,7 @@
     .@{ant-prefix}-input {
         border-color: @error-color  !important;
     }
+
     .@{ant-prefix}-select-selector,
     .@{ant-prefix}-cascader-picker,
     .@{ant-prefix}-picker,
@@ -517,6 +520,7 @@
 }
 
 .@{form-item-cls}-warning {
+
     .@{ant-prefix}-select-selector,
     .@{ant-prefix}-cascader-picker,
     .@{ant-prefix}-picker,
@@ -527,6 +531,7 @@
     .@{ant-prefix}-input {
         border-color: @warning-color  !important;
     }
+
     .@{ant-prefix}-select-selector,
     .@{ant-prefix}-cascader-picker,
     .@{ant-prefix}-picker,
@@ -560,6 +565,7 @@
     .@{ant-prefix}-input {
         border-color: @success-color  !important;
     }
+
     .@{ant-prefix}-select-selector,
     .@{ant-prefix}-cascader-picker,
     .@{ant-prefix}-picker,
@@ -579,4 +585,4 @@
         border-right-width: 1px !important;
         outline: 0;
     }
-}
+}
\ No newline at end of file