I don't have any zoom button in map
<openlayers ol-center="center" height="345px" width="560px">
<ol-marker ol-marker-properties="coords"><ol-marker>
</openlayers>
how can i show them? plus and minus
i use angular openlayer directive
you need to import the css file
<link rel="stylesheet" href="https://openlayers.org/en/v4.6.5/css/ol.css" type="text/css">