Edit in JSFiddle

body {
    background: url(http://subtlepatterns.com/patterns/kindajean.png);
    padding:20px;
}
input[type=submit]:focus {
    border: 0;
}
input[type=submit] {
    cursor: pointer;
    -webkit-appearance: button;
    width: 100px;
    padding: 10px;
    border: 0;
    background-color: #888888;
    text-decoration: none;
    color: #fff !important;
    text-shadow: 0 0 1px #333;
    font-weight: bold;
    letter-spacing: -.5px;
    position: relative;
    padding: 15px 20px;
    background-image: linear-gradient(bottom, rgb(102, 102, 102) 0%, rgb(153, 153, 153) 100%);
    background-image: -o-linear-gradient(bottom, rgb(102, 102, 102) 0%, rgb(153, 153, 153) 100%);
    background-image: -moz-linear-gradient(bottom, rgb(102, 102, 102) 0%, rgb(153, 153, 153) 100%);
    background-image: -webkit-linear-gradient(bottom, rgb(102, 102, 102) 0%, rgb(153, 153, 153) 100%);
    background-image: -ms-linear-gradient(bottom, rgb(102, 102, 102) 0%, rgb(153, 153, 153) 100%);
    background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, rgb(102, 102, 102)), color-stop(1, rgb(153, 153, 153)));
    -webkit-border-radius: 100px;
    -moz-border-radius: 100px;
    -o-border-radius: 100px;
    border-radius: 100px;
    -webkit-box-shadow: inset 0px 1px 0px #b1b1b1, 0px 5px 0px 0px #4a4a4a, 0px 10px 5px #999;
    -moz-box-shadow: inset 0px 1px 0px #b1b1b1, 0px 5px 0px 0px #4a4a4a, 0px 10px 5px #999;
    -o-box-shadow: inset 0px 1px 0px #b1b1b1, 0px 5px 0px 0px #4a4a4a, 0px 10px 5px #999;
    box-shadow: inset 0px 1px 0px #b1b1b1, 0px 5px 0px 0px #4a4a4a, 0px 10px 5px #999;
}
input[type=submit]:active {
    top: 3px;
    background-image: linear-gradient(bottom, rgb(153, 153, 153) 0%, rgb(102, 102, 102) 100%);
    background-image: -o-linear-gradient(bottom, rgb(153, 153, 153) 0%, rgb(102, 102, 102) 100%);
    background-image: -moz-linear-gradient(bottom, rgb(153, 153, 153) 0%, rgb(102, 102, 102) 100%);
    background-image: -webkit-linear-gradient(bottom, rgb(153, 153, 153) 0%, rgb(102, 102, 102) 100%);
    background-image: -ms-linear-gradient(bottom, rgb(153, 153, 153) 0%, rgb(102, 102, 102) 100%);
    background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, rgb(153, 153, 153)), color-stop(1, rgb(102, 102, 102)));
    -webkit-box-shadow: inset 0px 1px 0px #b1b1b1, 0px 5px 0px 0px #4a4a4a, 0px 10px 5px #999;
    -moz-box-shadow: inset 0px 1px 0px #b1b1b1, 0px 5px 0px 0px #4a4a4a, 0px 10px 5px #999;
    -o-box-shadow: inset 0px 1px 0px #b1b1b1, 0px 5px 0px 0px #4a4a4a, 0px 10px 5px #999;
    box-shadow: inset 0px 1px 0px #b1b1b1, 0px 5px 0px 0px #4a4a4a, 0px 10px 5px #999;
}

<input type="submit" value="Save">