.baz
  border-right-width: 0px


.foo
  margin: 0px
  padding: 0


.bar
  padding: 5px 0 0px


$foo: 0px
$bar: '0px'

.foo
  @if $bar == 0
    content: 'bar'


  @if $foo == '0px'
    content: 'foo'