Center Fluid Width

tried below to center heart icon and number under attached album art with fluid width, but cannot get number on same level as heart icon at http://soundcloud.pro

a.sf-button span:first-child {
text-align: right;
}
a.sf-button {
text-align: center;
}
a.sf-button span {
float: none !important;
width: auto !important;
}