message: Use proper headings hierarchy
diff: @@ -61,7 +61,9 @@ export default function ActivitySection() {
  return (
  <Grid container component="section">
  <Grid container direction="column" className={classes.container}>
  - <Typography variant="h6">{t('contact:subtitle')}</Typography>
  + <Typography variant="h6" component="p">
  + {t('contact:subtitle')}
  + </Typography>
  </Grid>
  <Grid container direction="column" className={classes.container}>
  <Grid item>
  