in openlayer angular directive zoom buttons does not show

Question

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

Answer 1

you need to import the css file

<link rel="stylesheet" href="https://openlayers.org/en/v4.6.5/css/ol.css" type="text/css">