Setting `fontSize` to `inherit` causes unexpected NaN value

[luukvhoudt]

Description

The following console warning is thrown when setting xaxis.labels.style.fontSize to inherit:

Unexpected value translate(0, NaN) parsing transform attribute

This is the line that causes the problem.

Steps to Reproduce

1. Create a bar chart
2. Set the fontSize property to the string value 'inherit'

Expected Behavior

No warning is logged, the font size is inherited and the computed value is used to calculate the value for the transform attribute.

Actual Behavior

A NaN console warning is logged, the calculation fails for the transform attribute but the font size DOES change.