gistfile1.css

a.button {
        background: -webkit-gradient(linear, left top, left bottom, from(#50A7E7), to(#3679CF));
        background: -moz-linear-gradient(top,  #50A7E7,  #3679CF);
        border: 1px solid #4081AF;
        color: #fff;
        cursor: pointer;
        font: 12px/100% 'Lucida Grande';
        padding: 4px 15px;
        text-decoration: none;
        text-shadow: 0 1px 0 rgba(0,0,0,.5);
        -webkit-box-shadow: 0 1px 1px rgba(255,255,255,.3) inset, 0 1px 1px rgba(0,0,0,.2);
        -moz-box-shadow: 0 1px 1px rgba(255,255,255,.3) inset, 0 1px 1px rgba(0,0,0,.2);
        -moz-border-radius: 15px;
        border-radius: 15px;
}

a.button:hover {
        background: -webkit-gradient(linear, left top, left bottom, from(#51A8E7), to(#206BCB));
        background: -moz-linear-gradient(top,  #51A8E7,  #206BCB);
        -webkit-box-shadow: 0 1px 1px rgba(255,255,255,.2) inset, 0 1px 1px rgba(0,0,0,.1);
        -moz-box-shadow: 0 1px 1px rgba(255,255,255,.2) inset, 0 1px 1px rgba(0,0,0,.1);
}

a.button:active {
        -webkit-box-shadow: 0 0 10px rgba(0,0,0,.3) inset;
        -moz-box-shadow: 0 0 10px rgba(0,0,0,.3) inset;
        text-shadow: 0 -1px 0 rgba(0,0,0,.9);
}