body{
	font-family: Arial, Helvetica, sans-serif;
	margin: 0px;
}

header {
	text-align: center;
	background-color:#555555;
	color:#ffffff;
	padding: 3px;
}

main {
	background-color: #eeeeee;
	padding: 0px;
	padding-bottom:0px;
	padding-top:0px;
	border-bottom: 0px;
  margin:0px;
}

nav {
	text-align: center;
	background-color:#cccccc;
	padding: 10px;
}

#canv_id{ 
	border: 1px solid black;
	/* margin: auto; */

}
textarea{
	font-family: 'Courier New', Courier, monospace;
	/* font-size: 12pt; ist Standard*/
	width: 340px;
	height: 50px;
}