fix(Modal): fix modal hide-mask style

close #203

Author: ZxBing0066

src/components/Modal/Modal.jsx

@@ -65,7 +65,8 @@ class Modal extends Component {
         animation: 'fade',
         size: 'md',
         zIndex: 1010,
-        closable: true
+        closable: true,
+        mask: true
     };
     getDefaultFooter = () => {
         const { onOk, onClose, locale } = this.props;

src/components/Modal/style/index.js

@@ -41,7 +41,7 @@ class RcDialogWrap extends Component {
 }
 
 export const ModalWrap = styled(RcDialogWrap)(
-    ({ theme: { designTokens: DT, fontSize } }) => css`
+    ({ theme: { designTokens: DT, fontSize }, mask }) => css`
         position: fixed;
         overflow: auto;
         top: 0;
@@ -51,7 +51,7 @@ export const ModalWrap = styled(RcDialogWrap)(
         z-index: 1010;
         -webkit-overflow-scrolling: touch;
         outline: 0;
-        background: ${DT.T_MODAL_COLOR_LAYER_DEFAULT};
+        background: ${mask && DT.T_MODAL_COLOR_LAYER_DEFAULT};
 
         .${prefixCls} {
             padding: 0;