body{font-family:Arial, Helvetica, sans-serif;}.roundbutton{display:inline-block;border-radius:15px;text-shadow:1px 0 0 #000, 0 -1px 0 #000, 0 1px 0 #000, -1px 0 0 #000;font-weight:bold;padding:10px;margin:10px;text-align:center;min-width:125px;border:none;outline:none;min-width:125px;min-height:75px;position: relative;color:#ecf80e;background-color:#008000;}.roundbutton::after, .roundbutton:after{background-color: black;width: 100%;border-radius:15px;height: 100%;display: block;content: '';position: absolute;left: 0;top: 0;opacity: 0;}.roundbutton:hover::after, .roundbutton:hover:after{opacity: 0.4;}.roundbutton:active::after, .roundbutton:active:after{opacity: 0.8;}.roundbutton:disabled::after, .roundbutton:disabled:after{background-color: darkgrey;opacity: 0.8;}.roundbutton:disabled:active::after, .roundbutton:disabled:active:after, .roundbutton:disabled:hover::after, .roundbutton:disabled:hover:after{opacity: 0.8;}