app/common/directives/log-search-control.html

<section id="event-search" class="row column" aria-label="event log search">
  <p class="content-label">Filter events</p>
  <div class="content__search">
    <label for="content__search-input">Event Log Search</label>
    <input id="content__search-input" type="text" ng-model="customSearch" ng-keydown="doSearchOnEnter($event)"/>
    <div class="search-submit__wrapper">
      <button class="clear-input" ng-click="clear()">&#10005;</button>
      <input id="content__search-submit" type="submit" class="btn btn-primary content__search-submit" value="Filter" ng-click="doSearchOnClick()"/>
    </div>
  </div>
</section>