Purpose

Users might find the original width of the Assign/Comment dialog too narrow and makes it hard to read or edit the comments

Solution

• Go to JIRA Administrator > System > Announcement Banner
  

• In the Announcement text box, paste the code below and click Set Banner. Please change the values of the width accordingly (the example shown below is 900 pixels wide, % width works as well).

  <style>
  #assign-dialog /* The "id" of the "Assign" dialog box */
  {
    width: 900px !important;
  }
  #comment-add-dialog /* The "id" of the "Add Comment" dialog box */
  {
    width: 900px !important;
  }
  #edit-comment /* The "id" of the "Edit Comment" dialog box */
  {
    width: 900px !important;
  }
  </style>