fix: change margin to padding

src/loading.tsx

@@ -1,7 +1,7 @@
 import { Skeleton } from 'antd';
 
 const Loading: React.FC = () => (
-  <Skeleton style={{ margin: '24px 40px', height: '60vh' }} active />
+  <Skeleton style={{ padding: '24px 40px', height: '60vh' }} active />
 );
 
 export default Loading;