           position="0 .2 0">
      </a-entity>

      <!-- Boxes. -->
      <a-entity position="-2.5 0 1">
        <a-entity mixin="column">
          <a-entity mixin="column-light"></a-entity>
          <a-entity mixin="object-on-column color box spin" animation__spin="to: 360"></a-entity>
          <a-entity mixin="object-on-column color box spin" position=".18 1.2 .1" animation__spin="to: 360"></a-entity>
          <a-entity mixin="object-on-column color box spin" position="-.18 1.2 -.2" animation__spin