<h4 class="mb-3">Load samples</h4>
<!-- Checkboxes for sample data. -->
{{
  checkboxInput(inputId = "covid_canada", label = "COVID-19 Canada, 2020/03/03 - 2020/03/31 (Weekly)",
    value = FALSE, width = "100%"
  )
}}
{{
  checkboxInput(inputId = "covid_ontario", label = "COVID-19 Ontario, 2020/03/03 - 2020/03/31 (Weekly)",
    value = FALSE, width = "100%"
  )
}}
<!-- Warning text. -->
<div>
  <small id="data_samples_warn" class="form-text text-primary shiny-text-output"></small>
</div>
<button id="data_samples" type="button" class="btn btn-outline-primary btn-sm action-button mt-3">
  <span class="glyphicon glyphicon-plus"></span> Add
</button>
