Mutiple Objects and difirent style

Hello All,

i want to use tree grids in the same page but i don't know how i can change the style for each one.

<style>
.active-controls-grid {height: 150px; width: 500px; font: menu;}

.active-column-0 {width: 145px;}
.active-column-1 {width: 75px;}
.active-column-2 {width: 75px;}
.active-column-3 {width: 75px;}
</style>