Display fields for border css.
Code Sample:
array(
'id' => 'border_field',
'title' => __('Border Field','text-domain'),
'details' => __('Description of border field','text-domain'),
'value' => array('width'=>'54', 'unit'=>'%' , 'style'=>'solid', 'color'=>'#ddd'),
'default' => array('width'=>'54', 'unit'=>'px' , 'style'=>'solid', 'color'=>'#ddd'),
),
Preview:
