Form Field Titles in Field box (placeholder HTML 5) and other

Thanks guys from Form 2.0​ @Sanford Whiteman​@Grégoire Michel​Jamie Lewis​

1. Placeholder: I got the tokens to work in a form how do I customize it so that the form field titles are inside the box and to make look like:

2. Also for opt-in I need the date/time: I'm guessing best way is to: create a variation rule to have it populate in forms (hidden)?

3. Disclaimer copy:
(a)The disclaimer copy appears but the width seems to be half the width and css code doesn't seem to work:

na-ab17.marketo.com/lp/213-VVN-394/Test1_LP-Token-ToFixDisclaimer.html

(b) fields need to extend to full width
(c) Full width Submit button

(d) colour change doesn't work

Css codes used:
#10845885 - Pastie

Thank you,
Will