message: Use MUI styles  abbreviations
diff: @@ -92,8 +92,8 @@ export default function Jumbotron() {
  xs: 260,
  md: 320,
  },
  - marginRight: theme.spacing(4),
  - marginBottom: {
  + mr: theme.spacing(4),
  + mb: {
  xs: theme.spacing(1.5),
  sm: 0,
  },
  