Answer by Rajdeep Singh for Inline styling in Rails 4 erb

Do this instead

truncate(job_profile.description +'&nbsp;&nbsp;<font color="#999">[ '+ list.join(', ') +' ]</font>', :length => 100).html_safe

or

raw(truncate(job_profile.description +'&nbsp;&nbsp;<font color="#999">[ '+ list.join(', ') +' ]</font>', :length => 100))

Hope that helps!