diff --git a/components/form/demo/input-size.md b/components/form/demo/input-size.md
index 25ce0d7b0d65f10de3e1b7c2135c31ea38909aab..cfad52fd2bdf5619a2b9cd2574b5864eede434cb 100644
--- a/components/form/demo/input-size.md
+++ b/components/form/demo/input-size.md
@@ -11,13 +11,13 @@
 ````html
 
 <div class="row">
-  <div class="col-6 pdrg-8">
+  <div class="col-6">
     <input class="ant-input ant-input-lg" type="text" id="largeInput" placeholder="大尺寸"/>
   </div>
-  <div class="col-6 pdrg-8">
+  <div class="col-6">
     <input class="ant-input" type="text" id="defaultInput" placeholder="默认尺寸"/>
   </div>
-  <div class="col-6 pdrg-8">
+  <div class="col-6">
     <input class="ant-input ant-input-sm" type="text" id="smallInput" placeholder="小尺寸"/>
   </div>
 </div>
diff --git a/components/form/demo/mix.md b/components/form/demo/mix.md
index 2f2e0269ae60912c182cd9b268e9ed6eb747196f..cc4c85d2fc597c46854798ddc6ed8ef64661e495 100644
--- a/components/form/demo/mix.md
+++ b/components/form/demo/mix.md
@@ -26,14 +26,14 @@ React.render(
   <form className="ant-form-horizontal">
     <div className="ant-form-item">
       <label className="col-6" required>Input-Number:</label>
-      <div className="col-6 pdrg-8">
+      <div className="col-6">
         <InputNumber min={1} max={10} defaultValue={3} onChange={onChange} style={{width:100}}/>
       </div>
       <div className="col-3"><p className="ant-form-text"> 台机器</p></div>
     </div>
     <div className="ant-form-item">
       <label className="col-6" required><i className="anticon anticon-exclamation-circle"></i>我是标题:</label>
-      <div className="col-7 pdrg-8">
+      <div className="col-7">
         <p className="ant-form-text">唧唧复唧唧木兰当户织呀</p>
       </div>
       <div className="col-9">
diff --git a/style/components/typography.less b/style/components/typography.less
index e7a835f45c1f316a80f48f6ecc60dfeb915057e2..d0a56dbdf0596160f07d926e16a2d9c833bb5b92 100644
--- a/style/components/typography.less
+++ b/style/components/typography.less
@@ -1,12 +1,3 @@
 //== Typography
 
-//** Headings: h1 h2 h3 h4 h5 h6
-
-
-.pdrg-8 {
-	padding-right: 8px;
-}
-
-.pdlf-8 {
-	padding-left: 8px;
-}
\ No newline at end of file
+//** Headings: h1 h2 h3 h4 h5 h6
\ No newline at end of file