text flowing out of div

It's due to the fact that you have one long word without spaces. You can use the word-wrap property to cause the text to break:

#w74 { word-wrap: break-word; }

It has fairly good browser support, too. See documentation about it here.

Use

white-space: pre-line;

It will prevent text from flowing out of the div. It will break the text as it reaches the end of the div.