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HTML

            
              <div id="phone">
        
</div>
            
          
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↑ Insert the most common viewport meta tag

CSS

            
              #phone {
	margin-bottom:200px;
	width:400px;
	height:500px;
	border-left:20px solid #333;
	border-right:20px solid #333;
	border-bottom:30px solid #333;
	-webkit-border-bottom-right-radius:25px;
	-webkit-border-bottom-left-radius:25px;
	-moz-border-radius-bottomright:25px;
	-moz-border-radius-bottomleft:25px;
	border-bottom-right-radius:25px;
	border-bottom-left-radius:25px;
	background-color:#FFF;
	margin:0 auto;	
}
            
          
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JS

            
              
            
          
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