Invalid border CSS property rendering

[vyorkin]

Its only borders, but, for example, here: https://github.com/slamdata/purescript-css/blob/9e78699ea728f519ec5b3e830aa2036823dd50a7/test/Main.purs#L62
it renders:

"border: dashed 2.0px hsl(240.0, 100.0%, 50.0%) "

if I understand correctly there are 2 issues here:

• trailing space at the end
• it should be 2px instead of 2.0px