JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
                                <li><label>Original Select Box</label></li>
                                <li class="sel_con">
                                <select >
                                    <option value="">Select</option>
                                    <option value="">aaaaaa</option>
                                    <option value="">aaaaaa</option>
                                    
                                </select>
                                </li>
    
                            </ul>

CSS

ul > li.sel_con
{
	float:none;
	list-style:none;
	width:215px;
	border:1px solid #cfcfcf;
	height:auto;
	border-radius:5px;

   padding:6px 0 6px 02px;
   	position:relative;
	z-index:0;
	behavior: url(pie/PIE.htc);
   
}

ul > li > select
{
	width:207px;
	border:none;
	background-color:transparent;
	outline:none;
    background: url(http://i57.tinypic.com/nnmgpy_th.png) no-repeat right ;
-webkit-appearance: none;
-moz-appearance:none; 
}