HTML to jade conversion

How to translate the below html into jade

<div id="app" ng-app="myApp" class="{@ .CSS @}">

htm2jade gave

#app.{@..CSS.@}(ng-app='myApp')

bur jade rendered it as

 <div id="app">.{@..CSS.@}(ng-app='myApp')

how can i represent the first line of html as jade.

Thanks.

Non-identifier class names can be included in the attributes:

#app(class='{@ .CSS @}', ng-app='myApp')

They'll be combined with any "selector" names:

#app.foo-bar(class='{@ .CSS @}', ng-app='myApp')
<div id="app" ng-app="myApp" class="foo-bar {@ .CSS @}"></div>