:host {

             display: block;

             break-inside: avoid-column;

         }

         h3 {

             margin-top: 12px;

             margin-bottom: 0;

         }

         td.nonzero {

             background: #310202;

             color: #e25757;

        <h1>Collector <a href="stats">[stats]</a></h1>

        <h2>Devices</h2>

        <template is="dom-repeat" items="{{devices}}">

          <light9-collector-device

              graph="{{graph}}" updates="{{updates}}"

                   url="/effectEval/songEffects"

                   method="POST"

                   content-type="application/x-www-form-urlencoded"></iron-ajax>

          <button on-click="onAdd">Add to current song</button>

          <button on-mousedown="onMomentaryPress"

                  on-mouseup="onMomentaryRelease">Add momentary</button>

      </template>

    </dom-module>