Hello,
Please insrtall FireBug extension for fireFoax - with it help - you will can easy check what and where you need change in CSS or HTML.
1. Please check style or replase style in yours template for:
2 Fore remove border, please for class
remove tag "border" or redefine
3. we not set some width for column, so it take max accessible space, But for map width you may change in file:
/components/com_vehiclemanager/vehiclemanager.html.php
Please find all look like:
<div id="vm_map_canvas" style="width:400px; height:300px; border: 1px solid black; float: left;">
and set width as you wish
But first please backup file
Thanks,
OrdaSoft team