Redmine

Hi,
i use the following syntax to add an inline image with CSS style on a wiki page (as described on RedmineTextFormattingTextile > inline images):

!{width: 60%;border: 3px solid green}myface.png!

when i try to export the page to PDF (with the standard link at the bottom of the page), the image is not displayed on the resulting document! only a textual reference to the attached image file is shown (at the bottom of PDF)

if i remove the CSS style from inline image syntax, it works!!

!myface.png!

My environment:
Platform Ubuntu Server 14.04.4 LTS

Environment:
  Redmine version                3.3.0.stable
  Ruby version                   2.3.0-p0 (2015-12-25) [x86_64-linux]
  Rails version                  4.2.6
  Environment                    production
  Database adapter               Mysql2
SCM:
  Filesystem                     
Redmine plugins:
  redmine_checklists             3.1.3
  redmine_contacts               4.0.4
  redmine_custom_help_url        0.0.2
  redmine_dmsf                   1.5.6
  redmine_favorite_projects      2.0.2
  redmine_ics_export             3.0.1.dev
  redmine_language_change        0.1.0
  redmine_monitoring_controlling 0.1.1
  redmine_people                 1.2.0
  redmine_stats                  0.0.3
  redmine_xlsx_format_issue_exporter 0.1.2
  sidebar_hide                   0.0.7