refactor(notFound): Move inline css into redirectButton styled-component.

packages/components-faraday/src/components/UIComponents/NotFound.js

@@ -13,16 +13,9 @@ const NotFound = ({ history }) => (
       The page you are looking for might have been removed, had its name
       changed, or is temporarily unavailable.
     </H3>
-    <Button
-      onClick={() => history.push('/')}
-      primary
-      style={{
-        display: 'inline-flex',
-        alignSelf: 'center',
-      }}
-    >
+    <RedirectButton onClick={() => history.push('/')} primary>
       Go to dashboard
-    </Button>
+    </RedirectButton>
   </Root>
 )
 
@@ -33,6 +26,10 @@ const Root = styled.div`
   text-align: center;
   width: 90vw;
 `
+const RedirectButton = styled(Button)`
+  display: inline-flex;
+  align-self: center;
+`
 const H2 = styled.h2`
   font-size: ${th('fontSizeHeading2')};
 `