(
                   [0] => 10px
               )

           [color] => Array
               (
                   [0] => black
                   [1] => #000000
               )

           [font-style] => Array
               (
                   [0] => normal
                   [1] => normal
               )

           [font-weight] => Array
               (
                   [0] => normal
                   [1] => normal
               )

           [background-color] => Array
               (
                   [0] => #F5F5F5
               )

       )
*/
print_r($parser->getSelector('pre.sh_sourceCode'));