JSFiddle - React, Tailwind, and code Playground

HTML

<div id="containerAdmin">
	    <div id="page">
	        <div class="opt_panel">
	            <div class="sel">
	                <div class="block1">
	                    <div class="_ui _com">
	                        <span class="ui_lab">Label:</span>
							<img src="http://i.imgur.com/DauuVHW.png" />
	                        <select class="inp_160">
	                            <option></option>
	                        </select>
	                    </div>
	                    <div class="_ui _bre"> <span class="ui_lab">Label: </span>
							<img src="http://i.imgur.com/DauuVHW.png" />
	                        <select class="inp_160">
	                            <option></option>
	                        </select>
	                    </div>
	                </div>
	            </div>
	        </div>
	    </div>
	</div>

CSS

html, body, div, span, h1, h2, h3, h4, h5, h6, p, blockquote, a, em, img, q, s, small, strike, strong, sub, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, footer, header, button
{
	line-height: inherit;
	padding-top: 0px;
	padding-right: 0px;
	padding-bottom: 0px;
	padding-left: 0px;
	font-family: inherit;
	font-size: inherit;
	font-style: inherit;
	font-variant: inherit;
	font-weight: inherit;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
	margin-left: 0px;
	vertical-align: baseline;
	border-top-color: currentColor;
	border-right-color: currentColor;
	border-bottom-color: currentColor;
	border-left-color: currentColor;
	border-top-width: 0px;
	border-right-width: 0px;
	border-bottom-width: 0px;
	border-left-width: 0px;
	border-top-style: none;
	border-right-style: none;
	border-bottom-style: none;
	border-left-style: none;
	font-size-adjust: inherit;
	font-stretch: inherit;
}
body
{
	line-height: 1;
}
html, body
{
	height: 100%;
	background-attachment: scroll;
	background-repeat: repeat;
	background-position-x: 0%;
	background-position-y: 0%;
	background-size: auto;
	background-origin: padding-box;
	background-clip: border-box;
	background-color: rgb(238, 238, 238);
}
body
{
	color: #232323;
	font-family: Verdana,Helvetica,Sans-Serif;
	font-size: 0.75em;
	margin-top: 0px;
	margin-right: 10px;
	margin-bottom: 0px;
	margin-left: 10px;
}
#containerAdmin
{
	height: auto !important;
	margin-top: 0px;
	margin-right: auto;
	margin-bottom: -50px;
	margin-left: auto;
	border-right-color: #bbb;
	border-left-color: #bbb;
	border-right-width: 1px;
	border-left-width: 1px;
	border-right-style: solid;
	border-left-style: solid;
	min-height: 94%;
	max-width: 1450px;
	box-shadow: 0px 0px 5px rgba(0,0,0,0.2);
	background-size: auto;
	background-origin: padding-box;
	background-clip: border-box;
	background-color: rgb(255, 255, 255);
}
#page
{
	line-height: 1.25;
	padding-top:...