Re: [csswg-drafts] [css-rhythm-1] Avoiding accidental double spacing

> If we want font-based line heights to be possible to use with 
step-sizing, we need to add a normal keyword (that computes to its 
absolute length) to line-height step

Can you clarify how author can do:
```css
line-height: normal;
line-height-step: 18px;
```
that was what I wanted to ask but probably failed, sorry about that.

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