   flex: 0 1 auto;
      align-self: stretch;
    }
    #content > * {
      flex: 0 0 auto;
      align-self: stretch;
    }
    #histogramContainer {
      display: flex;
    }

    tr-ui-a-multi-event-summary-table {
      border-bottom: 1px solid #aaa;
    }

    tr-ui-a-selection-summary-table  {
      margin-top: 1.25em;
      border-top: 1px solid #aaa;
      background-color: #eee;
      font-weight: bold;
      margin-bottom: 1.25em;
      border-bottom: 1px solid #aaa;
    }
    </style>
    <div 