button {
 position: relative;
 padding: 10px 40px;
 margin: 0px 10px 10px 0px;
 float: left;
 border-radius: 3px;
 font-size: 20px;
 color: #FFF;
 text-decoration: none;
 background-color: #2ecc71;
 border: none;
 border-bottom: 5px solid #27ae60;
 text-shadow: 0px -2px #27ae60;
 -webkit-transition: all 0.1s;
 transition: all 0.1s;
}

button:hover, button:active {
 -webkit-transform: translate(0px,5px);
 -ms-transform: translate(0px,5px);
 transform: translate(0px,5px);
 border-bottom: 1px solid #2ecc71;
}