优化layout样式

src/components/layout/index.tsx

@@ -8,13 +8,14 @@ const { Header, Footer, Content } = Layout;
 const headerStyle: React.CSSProperties = {
   height: 'auto',
   background: 'none',
-  padding: 0
+  padding: 0,
+  lineHeight: '1'
 };
 
 const contentStyle: React.CSSProperties = {
   textAlign: 'center',
   minHeight: 120,
-  lineHeight: '',
+  lineHeight: '1',
   color: '',
   backgroundColor: '',
 };
@@ -23,6 +24,7 @@ const footerStyle: React.CSSProperties = {
   textAlign: 'center',
   color: '',
   backgroundColor: '#7dbcea',
+  lineHeight: '1',
 };
 
 type Props = {