fix grid card padding implementation

components/card/__tests__/__snapshots__/demo.test.js.snap

@@ -88,7 +88,6 @@ exports[`renders ./components/card/demo/grid-card.md correctly 1`] = `
   </div>
   <div
     class="ant-card-body"
-    style="padding:0;"
   >
     <div
       class="ant-card-grid"

components/card/demo/grid-card.md

@@ -22,7 +22,7 @@ const gridStyle = {
 };
 
 ReactDOM.render(
-  <Card title="卡片标题" noHovering bodyStyle={{ padding: 0 }}>
+  <Card title="卡片标题" noHovering>
     <Card.Grid style={gridStyle}>卡片内容</Card.Grid>
     <Card.Grid style={gridStyle}>卡片内容</Card.Grid>
     <Card.Grid style={gridStyle}>卡片内容</Card.Grid>

components/card/style/index.less

@@ -68,6 +68,7 @@
 
   &-contain-grid &-body {
     margin: -0.5px;
+    padding: 0;
   }
 
   &-grid {