.nb-error-view {
    padding: 40px 15px;
    text-align: center;
}

.nb-error-actions {
    margin-top:15px;
    margin-bottom:15px;
}

.nb-error-actions .btn {
    margin-right:10px;
}

.nb-error-actions > .btn > .glyphicon {
    margin-right: 5px;
}