unnecessary float: similar fix as to issue 145

The float:left makes the comment (for rescheduling the payment) displayed right to the headline
which makes it half hidden behind the boxes in the right row
I removed the complete div as the h3 is already a block level element and the div should not be needed.

See for example: https://www.zidisha.org/microfinance/loan/munyula/3298.html#e4