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What I use instead of two multi-segment blocks in html, therefore it works on Phone / Ipad

In my HTML user interface, I wanted users to be able to select multiple countries because there are too many countries to allow the display of a complete list. I am launching an HTML page, so it has two lists: in the second list there are only those that were selected, the first contains all countries (except those already selected and added to the second list), user transfer between the two lists using the "Add" button and delete "

I show 15 lines for each selection window, setting the size attribute.

<tr>
    <td>
        <select id="preferred_countries_all" size="15" style="width:200px" multiple="multiple">
            <option value=" AF">Afghanistan</option>
            <option value="AX">Åland Islands</option>
            <option value="AL">Albania</option>
            <option value="DZ">Algeria</option>
            <option value="AS">American Samoa</option>
            <option value="AD">Andorra</option>
            <option value="AO">Angola</option>
            <option value="AI">Anguilla</option>
            <option value="AQ">Antarctica</option>
            <option value="AG">Antigua and Barbuda</option>
            <option value="AR">Argentina</option>
            <option value="AM">Armenia</option>
            <option value="AW">Aruba</option>
            <option value="AU">Australia</option>
            <option value="AT">Austria</option>
            <option value="AZ">Azerbaijan</option>
            <option value="BS">Bahamas</option>
            <option value="BH">Bahrain</option>..
        </select>
    </td>
    <td>
        <button style="width:100px" type="button" id="preferred_countries_add" onclick="add_preferred_countries();">
        Add
        </button>
        <br>
        <button style="width:100px" type="button" id="preferred_countries_remove" onclick="remove_preferred_countries();">
        Remove
        </button>
    </td>
    <td>
        <select id="preferred_countries_selected" name="preferred_countries_selected" size="15" style="width:200px" multiple="multiple">
        </select>
    </td>
</tr>

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HTM: Android iPad,

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<tr>
                            <td>
                                <label title="Potential Releases from these countries get their score boosted">
                                    Preferred Release Countries
                                </label>
                            </td>
                            <td>
                                <input disabled="disabled" name="preferredCountries" id="preferredCountries" type="text" value="" class="readonlytextinfo">
                            </td>
                        </tr>
                        <tr>
                            <td class="indentedmultiselect" colspan="2">
                                <select id="preferred_countries_select" name="preferred_countries_select" multiple="multiple" onchange="getSelectValues(preferred_countries_select, preferredCountries)">
                                    <option value=" AF">Afghanistan</option><option value="ZW">Zimbabwe</option>
                                </select>
                            </td>
                        </tr>

<script>
function getSelectValues(select, readonlylist) {
  var result = [];
  var options = select && select.options;
  var opt;

  for (var i=0, iLen=options.length; i<iLen; i++) {
    opt = options[i];

    if (opt.selected) {
      result.push(opt.text);
    }
  }
  readonlylist.value =result.toString();
  if(readonlylist.value.length>230)
  {
    readonlylist.value=readonlylist.value.substring(0,230) + '...';
  }
  return result;
}
</script>
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