De or het outsiderkunst?

The correct Dutch article is:

de outsiderkunst

How to use outsiderkunst

the outsiderkunstde outsiderkunst
this outsiderkunstdeze outsiderkunst
that outsiderkunstdie outsiderkunst
our outsiderkunstonze outsiderkunst
your outsiderkunstjouw outsiderkunst
every outsiderkunstelke outsiderkunst
which outsiderkunst?welke outsiderkunst?
a big outsiderkunst / the big outsiderkunsteen grote outsiderkunst, de grote outsiderkunst