YA intente eso que me comentas pero sigue sin funcionar.
Código CSS:
Ver original.boton {
float:right;
border:solid 1px #dddddd;
background: url(../imagenes/guardar.png) no-repeat 5px center / 30px 30px,-webkit-gradient(linear, left top, left bottom, color-stop(0%,#ffffff), color-stop(100%,#eeeeee));
background-position: 5px center;
background-size:30px 30px;
background-repeat: no-repeat;
padding: 10px 10px 10px 35px;
border-radius:5px;
margin-right: 1%;
margin-top:1%;
color:#aaaaaa;
font-size: 1.1em;
text-shadow: 1px 1px 1px #ffffff;
font-weight: 700;
box-shadow: inset 0px 0px 6px #fff;
-webkit-box-shadow: inset 0px 0px 6px #fff;
}