WFS overlay popup set position multilinestring

[Ahmad]

how to display a popup with the appropriate position?

 map.on('singleclick', function (evt) {

        overlayPopup.setPosition(undefined);

        closer.blur();

        var features = [];

        var layers = [];

        var feature = map.forEachFeatureAtPixel(evt.pixel, function (feature, layer) {

            features.push(feature);

            layers.push(layer);

        });

        if (layers[0] == Layer1Popup) {

            showLayer1Popup(features);

        }

    });

function showLayer1Popup(features) {

    feature = features[0];

    var coord = feature.getGeometry().getCoordinates();

    if (feature) {

        content.innerHTML = '<b>Name : ' + feature.get('name') + '</b><br><br>Phone: ' + feature.get('phone');

        overlayPopup.setPosition(coord);

    }

}