Drop Shadow To Special Heading

Hi Guys,..

Just trying to add a simple drop shadow to the Special Heading H2, preferably a custom/selective class. None of the previous code on this subject is working. What am I doing wrong? Here’s the code I have:

body .av-special-heading.elegant-centered .av-special-heading-tag .heading-wrap .av-subheading p:first-child .av-subheading p:last-child {
    display: inline-block;
    position: relative;
    text-shadow: 2px 4px #000;
}