I was recently searching online for CSS tricks and came across a box shadow example that went as follows:
-webkit-box-shadow:0px 2px 4px black;
-moz-box-shadow:0px 2px 4px black;
box-shadow:0px 2px 4px black;
I tested it out and it seems to produce the same result when you only have the box-shadow line of code so I'm just wondering what the purpose of the webkit-box-shadow and moz-box-shadow are?