Estilos

@charset "utf-8";
/* CSS Document */
body {
	background:
	margin: 0;
	padding: 0;
	background: #000;
	text-align: justify;
	font: 13px "Trebuchet MS", Arial, Helvetica, sans-serif;
	color: #FFF;
	scrollbar-arrow-color: #0066CC;
	scrollbar-arrow-color: #999999;
	scrollbar-base-color: #242424;
	scrollbar-dark-shadow-color: #1F1F1F;
	scrollbar-track-color: #272727;
	scrollbar-face-color: #191919;
	scrollbar-shadow-color: #121212;
	scrollbar-highlight-color: #313131;
	scrollbar-3d-light-color: #242424; 
}
div.contenedor {
background: linear-gradient(to bottom, #93C 0%, #C6F 12%, #FFF 25%, #FFF 41%,#FFF 50%,#FFF 60%, #FFF 76%,#FFF 91%, #000 100%); 
border: 5px double #F05;
    border-radius: 50px 50px 50px 50px;
    height: 620px;
    margin: 0 auto;
    overflow: hidden;
    padding: 0 30px;
    width: 500px;

}
#canvas  
   {   margin-top: 10px; 
       border-style:solid; 
       border-width:1px;
	   background:#FFFBF0;
	   padding:0px;
	   font-size:.8em;	
	   background-color:#eee;
       border:1px solid #F05;	
   }
#canvasVolumen  
   { margin-top:10px; 
     border-style:solid; 
	 background:#FFFBF0;
     border-width:1px; 
     padding:0px; 
	 font-size:.8em;	
   }
.class