Curved corner border for a div

.radius {
-moz-border-radius: 6px;
-webkit-border-radius:6px;
border-radius: 6px;
    }

border-radius: 10px;

.rounded {background-color:#f1f0f1}
.rounded .inner {padding:8px 10px 8px 12px}
.rounded .c1 {height:1px;line-height:1px;font-size:1px;border-width: 0px 4px 0px 4px;border-color:#FFFFFF;border-style:solid;padding:0px}
.rounded .c2 {height:1px;line-height:1px;font-size:1px;display:block;border-width: 0px 2px 0px 2px;border-color:#FFFFFF;border-style:solid;padding:0px}
.rounded .c3 {height:2px;line-height:1px;font-size:1px;display:block;border-width: 0px 1px 0px 1px;border-color:#FFFFFF;border-style:solid;padding:0px}


   <div class="rounded" style="width:200px;height:100px">
    <div class="c1"></div><div class="c2"></div><div class="c3"></div>
    	<div class="inner">
    	-- Content Here --
    	</div>
        <div class="c3"></div><div class="c2"></div><div class="c1"></div>
   </div>