I need scroll box coding help

I need some help when I try to make a scroll box it works for a second but once it loads all the way it overflows out of the box.....see

<div style="height:120px;width:120px;border:1px solid #ccc;font:16px/26px Georgia, Garamond, Serif;overflow:scroll;">

text text text

</div>   this is the code I am using for it