parent-fit in fontFamily is ignored

[pumpi]

lazysizes/plugins/parent-fit/ls.parent-fit.js

Line 65 in 1523a4f

var content = css.content || css.fontFamily;

I like to set the parent-fit in CSS, but the content is always "normal" and ignores the setting in the fontFamily. If I use content to declare, it will run. I think Chrome set a default content in getComputedStyle(element) to "normal"