<div class="mui-input-row" style="margin:5px;display:block">
    <div id="бя" style="position:relative; border:1px solid #000; border-radius:4px; width:100%; height:10px">    
        <div style="position:absolute; left:0px; top:0px; border-radius:4px; background:#F00; width:100%; height:100%"></div>      
        <div style="position:absolute; left:0px; top:0px; border-radius:4px; background:#00F; width:50%; height:100%"></div>    
    </div>
</div>