Progress on moving color styles to Sass

app/assets/javascripts/components/components/missing_indicator.jsx

@@ -1,15 +1,7 @@
 import { FormattedMessage } from 'react-intl';
 
-const style = {
-  textAlign: 'center',
-  fontSize: '16px',
-  fontWeight: '500',
-  color: '#616b86',
-  paddingTop: '120px'
-};
-
 const MissingIndicator = () => (
-  <div style={style}>
+  <div className='missing-indicator'>
     <FormattedMessage id='missing_indicator.label' defaultMessage='Not found' />
   </div>
 );