'?' helper for idea portal

When submitting an Idea through the submission portal, a user sees the description of what should be entered into the box, and when the user selects the textbox, the description disappears (if the there is a lot of text, this could pose an issue for the user entering the right data into the text box). I was curious if a '?' icon can be added to the screen so that descriptions can be seen if a user hovers over the icon.