Wufoo forms are in iframes when embedded on other sites, so you won’t be able to get it to stick out and be visible in that narrow of an area.
What you’ll likely need to do is:
1) Hide the date picker with Custom CSS.
2) Or if you need the date picker, use the iFrame embed method (so the iframe doesn’t resize on you, then make the height parameter of the iframe tall enough to make room for your datepicker below that field, then use Custom CSS to make that fields’s list item wrapper tall enough to fit the datepicker and position the date picker to be underneath instead of to the right.
Fancy dancin’ — but all doable with Custom CSS.
For further support, you’ll probably get it quicker at: