css - IE7 sibling div width not same as sibling -

i struggling fixing ie7 issue. want sibling div same width it's siblings. first sibling acts header while other siblings have dimensions. use advice.

http://jsbin.com/etuxum/19/edit

thanks

try:

.ratesection { float: left; margin-right: 0px; width: 100%; } 

notice margin-right: 0px; blue background aplied

if add background-color:#999; .ratesection want