<div class="centered-block-frame" id="loading">
    <div class="col-md-6 centered-block">
        <div class="card">
            <div class="card-body text-center">
                <h2>{{ 'LOADING' | translate}}</h2>
                <div>{{ 'WAITING_DEVICES' | translate }}</div>
            </div>
        </div>
    </div>
</div>