I have this group of radio buttons in which each of individual button has of its own position set through style attribute. I would like to how can I archive the same by using drupal form api. I found how to style as whole but, not as individual control within group. Here's how my html code look like -

<input type="radio" name="base_location" checked="checked" value="0" style="margin-left:70px;float:left;"/><span style="float:left;">District</span>
  <input type="radio" name="base_location" value="1" style="margin-left:50px;float:left;"/><span style="float:left;">MRT</span>
  <input type="radio" name="base_location" value="2" style="margin-left:60px;float:left;"/><span style="float:left;">Address</span>

And this is the drupal code I'm stuck at -

$form['base_location'] = array(
   '#type' => 'radios',
   '#title' => t('base location'),
   '#default_value' => variable_get('search_type', 0),
   '#options' => array(
'0'=>t('District'),
'1'=>t('MRT'),
'2'=>t('Address')),
   '#description' => t('base location'),

I'm aware of #type=>radio existence. However, I do not know how to group all my radio buttons together in this regard. If I use same array key for all of them, they would collide each other. If I don't, they aren't seen as part of the same group. I thank you in advance.