CSS formatting in play templates

Hello!
I have a *.scala.html template for Play2 and some CSS inside it:

<style>
  conf-form input:nth-child(n+1) {
    margin-top: -1px;
  }
  .conf-form .btn {
     background-color: #17384C;
  }
</style>

After I press Code->Reformat code, I get:

<style>
.conf-form input : nth-child(n+1) {
margin-top: -1px ;
}
.conf-form.btn {
background-color: #17384C ;
}
</style>

It's not valid layout! .conf-form .btn and .conf-form.btn are different selectors! And this happens every time when I copy this code or complete code block or ...

In CSS formatting rules I have completely different rules, but for Play2 templates Idea uses Velocity language rules.

What should I do?