Help to fix my forum right Widget

[tonetone]

In the home page:



In the topic:



In post new topic, or reply: the position of the widget was changed . 



Please help me to fix it. 
My forum is punbb version (here is link to check http://yeucotuong.forumvi.com)

One more thing: i need to enlarge the width of message frame  when post a new topic or reply a topic.

Thank you,
tonetone

[AlexisMcDevin]

Try with this code in CSS:

Code:

#quick_reply #textarea_content { width:90% !important }