```html
<ui-grid class="demo-grid">
  <ui-grid-cell class="demo-cell" :columns="{default:6, tablet:8}">
    6 (8 tablet)
  </ui-grid-cell>
  <ui-grid-cell class="demo-cell" :columns="{default:4, tablet:6}">
    4 (6 tablet)
  </ui-grid-cell>
  <ui-grid-cell class="demo-cell" :columns="{default:2, phone:4}">
    2 (4 phone)
  </ui-grid-cell>
</ui-grid>
```
