Calendar-Tabs @calendar-tabs

Design
<div class="calendar-tabs">
  <div class="calendar-tabs__inner">
    <ul class="calendar-tabs__ul">
      <li class="calendar-tabs__li calendar-tabs__li--current"><a class="calendar-tabs__a" href="#">April</a></li>
      <li class="calendar-tabs__li"><a class="calendar-tabs__a" href="#">Mai</a></li>
      <li class="calendar-tabs__li"><a class="calendar-tabs__a" href="#">Juni</a></li>
      <li class="calendar-tabs__li"><a class="calendar-tabs__a" href="#">Juli</a></li>
      <li class="calendar-tabs__li"><a class="calendar-tabs__a" href="#">August</a></li>
      <li class="calendar-tabs__li"><a class="calendar-tabs__a" href="#">September</a></li>
      <li class="calendar-tabs__li"><a class="calendar-tabs__a" href="#">Oktober</a></li>
    </ul><button class="calendar-tabs__prev" type="button"><svg class="icon icon--chevron-left" viewBox="0 0 200 200">
        <use xlink:href="#icon-chevron-left"></use>
      </svg></button><button class="calendar-tabs__next" type="button"><svg class="icon icon--chevron-right" viewBox="0 0 200 200">
        <use xlink:href="#icon-chevron-right"></use>
      </svg></button>
  </div>
</div>