title: arrows to next and previous month are missing in vue-bootstrap-datetimepicker?
body: <p>I'm using this <a href="https://www.npmjs.com/package/vue-bootstrap-datetimepicker" rel="nofollow noreferrer">date picker</a> which is working fine but appears to be missing some CSS. I have tried tons of suggestions to make this css work but with no luck. This is my current (relevant) code:</p>
  
  <pre><code>&lt;template&gt;
      &lt;div class="row"&gt;
          &lt;div class="col-lg-4"&gt;
              &lt;div class="input-group"&gt;
                  &lt;date-picker
                          name="start-date"
                          ref="startDate"&gt;
                  &lt;/date-picker&gt;
                  &lt;div class="input-group-prepend"&gt;
                      &lt;button class="btn btn-outline-primary" type="button" @click="$refs.startDate.dp.show()"&gt;
                          &lt;font-awesome-icon icon="calendar-alt"&gt;&lt;/font-awesome-icon&gt;
                      &lt;/button&gt;
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
  
          &lt;div class="col-lg-4"&gt;
              &lt;div class="input-group"&gt;
                  &lt;date-picker
                          name="end-date"
                          ref="endDate"&gt;
                  &lt;/date-picker&gt;
                  &lt;div class="input-group-prepend"&gt;
                      &lt;button class="btn btn-outline-primary" type="button" @click="$refs.endDate.dp.show()"&gt;
                          &lt;font-awesome-icon icon="calendar-alt"&gt;&lt;/font-awesome-icon&gt;
                      &lt;/button&gt;
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/template&gt;
  
  &lt;script&gt;
  
      import datePicker from 'vue-bootstrap-datetimepicker';
      // Import date picker css
      import 'pc-bootstrap4-datetimepicker/build/css/bootstrap-datetimepicker.css';
  
  
      export default {
          name: "DateRange",
          components: {
              myDatePicker,
          },
          date: {
              startDate: '2019-10-10',
              endDate:   '2019-09-09'
          }
      }
  &lt;/script&gt;
  </code></pre>
  
  <p>And this is how my datepicker looks like:</p>
  
  <p><a href="https://i.stack.imgur.com/jLQtM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jLQtM.png" alt="enter image description here"></a></p>
  
  <p>The arrows to the next/previous month are not visible but they are working fine. They should be visible as many of the examples the <a href="http://eonasdan.github.io/bootstrap-datetimepicker/" rel="nofollow noreferrer">library shows</a>. I checked inspect element and they were not overwritten by another object or anything. No warnings or errors are found. I'm truly out of ideas after having tried all the suggestions all the other questions here on SO suggest. Is there any way to get them to show up or if not maybe a custom arrows CSS but would prefer not going down that road.</p>