.submit{
    border-color: #29447E #29447E #1A356E;
    position: relative;
    z-index: 1;
    overflow: visible;
    display: inline-block;
    padding: 0.3em 0.6em 0.375em;
    border: 1px solid #29447E;
    margin: 0;
    text-decoration: none;
    text-align: center;
    font: normal 11px/normal 'lucida grande', tahoma, verdana, arial, sans-serif;
    white-space: nowrap;
    cursor: pointer;
    /* outline: none; */
    color: #fff;
    background-color: #5B74A8;
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#637bad), to(#5872a7));
    background-image: -moz-linear-gradient(#637bad, #5872a7);
    background-image: -o-linear-gradient(#637bad, #5872a7);
    background-image: linear-gradient(#637bad, #5872a7);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#637bad', EndColorStr='#5872a7'); /* for IE 6 - 9 */
    -webkit-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #8a9cc2;
    -moz-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #8a9cc2;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1), inset 0 1px 0 #8a9cc2;
    /* IE hacks */
    zoom: 1;
    *display: inline;
}

<button class="submit" id="button"></button>