.btn-ok:before {
    font-family: 'Glyphicons Halflings';
    font-size: 0.85em;
    margin-right: 10%;
    content: '\e013';
    vertical-align: center;
}

.btn-anuluj:before {
    font-family: 'Glyphicons Halflings';
    font-size: 0.85em;
    margin-right: 10%;
    content: '\e014';
}