如何设置文本格式的div元素的边框？

I'm working a comment section page where it allows the user to leave a comment. I need assistance in my layout for displaying the comments into the repeater control. I used to put the comments inside the div element of the item and alternatingitem template of the repeater. And as a result, the comment would go straight along the line in the div element if the user is typing too many words or paragraph. What I want is to put a limit where the text will stop and proceed to the next line of the div element. How would I do that?What is the best way?Any suggestion? Here's my layout for the repeater control where I used to insert the comments.I'm working a comment section page where it all