```html
<ui-grid class="demo-grid max-width">
  <ui-grid-cell class="demo-cell" columns="4"></ui-grid-cell>
  <ui-grid-cell class="demo-cell" columns="4"></ui-grid-cell>
  <ui-grid-cell class="demo-cell" columns="4"></ui-grid-cell>
</ui-grid>
```

```css
.demo-grid.max-width {
  max-width: 1280px;
}
```
