IanBack/mPDF — Issue #4: Applying line-height to body/html gives division by zero.
Author: Beanow
Created: 2012-03-09 18:40:52+00:00
State: open

When using line-height on the body/html division by zero occurs.
This happens on line 4579 of the current version.

```php
$this->lineheight_correction = $am[1] / $def_fontsize ;
```

Below is the definition for `$def_fontsize`

```php
$def_fontsize = $this->blk[$this->blklvl]['InlineProperties']['size'];	// needs to be default font-size for block ****
```

Here it turns out after some debugging. `$def_fontsize == NULL`
I've been unable to determine though which element this is associated with.