How to align the height of span elements inside row-fluid?

Question

Bootstrap

There is a design:

<div class="row-fluid">
   <div class="span3">......</div>
   <div class="span9">......</div>
</div>

How to adjust the height of all span elements inside row-fluid to the highest height?
Did inside span - height: 100%; min-height:100%; - did not help, it does not react to inherit either.

Answer 1

* set a specific height for the cells.
* set a specific height for the line, and cells - 100%
* do not use bootstrap in this place, make it with a table (display:table + table-cell) or flexes.
* treat as javascript