body{

width:100%;}
div#box200{
    border: 5px solid #000;
    padding:10px;
    width: 170px;
    background-color: #ccc;
    voice-family: "\"}\"";
    voice-family:inherit;
    width: 200px;
    }
	body>div#box200{
    width: 400px;
	background-color:#FF0000;
    }