min-height and height not working correctly

When i use tailwind, child div heigth is 0:

```
<div class="min-h-screen">
  <div class="h-full bg-blue-500">
  </div>
</div>
```


Without tailwind it works:

```
<div style="min-height:100vh">
  <div style="height:100%; background-color:blue;">
  </div>
</div>
```