```html
<section class="demo-block" id="tip-demo1">
  <lx-x-number>
    v-model="v1"
    description="Default"
    title="Number"
  />
  <lx-tip>I am a tip.</lx-tip>

  <lx-x-number>
    v-model="v2"
    description="Default"
    title="Number"
  />
  <lx-tip align="center">
    I am a tip align center.
  </lx-tip>
</section>


<script>
// Tip.md
new Vue({
  el: '#tip-demo1',
  
  data: {
    v1: 0,
    v2: 0
  }
})
</script>
```