Jquery和CSS实现选择框重置按钮功能

<select>
 <option value="">Select a color..</option>
 <option value="red">Red</option>
 <option value="green">Green</option>
 <option value="blue">Blue</option>
</select>
<div class="displaySelect">
 <span class="value"></span>
 <span class="close">⊗</span>
 </div>

.displaySelect{
 display:none;
 border: 1px solid;
 }
 select, .displaySelect {
 text-indent:20px;
 font-family:helvetica;
 }
 select, .displaySelect{
 font-size:22px;
 height:50px;
 line-height:50px;
 width:100%;
 text-transform:capitalize;
 }
 .displaySelect .close{
 display:block;
 float:right;
 width:10%;
 text-align:center;
 font-size:52px;
 cursor:pointer;
 }

var select = $('select');
var selectResults = $('.displaySelect');
var selectValue = $('.value', selectResults);
var selectClose = $('.close', selectResults);
select.on('change', function() {
 $(this).add(selectResults).toggle();
 selectValue.html(this.value);
 });
 selectClose.click(function(){
 select.val('').fadeIn();
 selectResults.toggle();
 selectValue.html('');
 });