body
	{
	font-size:15px;
	font-weight:bold;
	font-family:Verdana, Geneva, Tahoma, sans-serif;
	}
.schaduw
	{
	position:absolute;
	left:13px;
	top:13px;
	width:400px;
	height:430px;
	background-color:black;
	border:1px black solid;
	}
.achtergrond
	{
	position:absolute;
	left:10px;
	top:10px;
	width:400px;
	height:430px;
	background-color:silver;
	border:1px black solid;
	}
#invoer1
	{
	position:absolute;
	width:300px;
	height:30px;
	left:50px;
	top:20px;
	border:1px black solid;
	border-left:3px black solid;
	border-top:3px black solid;
	font-size:30px;
	font-weight:bold;
	text-align:center;
	vertical-align:middle;
	}
#invoer2
	{
	position:absolute;
	width:300px;
	height:30px;
	left:50px;
	top:60px;
	border:1px black solid;
	border-left:3px black solid;
	border-top:3px black solid;
	font-size:30px;
	font-weight:bold;
	text-align:center;
	vertical-align:middle;
	}
#achterdekomma
	{
	position:absolute;
	width:10px;
	height:20px;
	left:360px;
	top:25px;
	border:1px black solid;
	border-left:2px black solid;
	border-top:2px black solid;
	font-size:15px;
	text-align:center;
	vertical-align:middle
	}
.kleineknop
	{
	position:absolute;
	border:1px black solid;
	border-right:3px black solid;
	border-bottom:3px black solid;
	width:40px;
	height:40px;
	font-size:30px;
	background-color:yellow;
	}	
#plus{left:50px; top:110px;}
#min{left:100px; top:110px;}
#door{left:150px; top:110px;}
#maal{left:200px; top:110px;}
#wortel{left:50px; top:160px;}
#kwadraat{left:100px; top:160px;}
#pi{left:150px; top:160px;}
#som{left:200px; top:160px;}
.groteknop
	{
	position:absolute;
	border:1px black solid;
	border-right:3px black solid;
	border-bottom:3px black solid;
	width:80px;
	height:40px;
	font-size:30px;
	background-color:yellow;
	}	
#sin{left:50px;	top:210px;}
#cos{left:50px;	top:260px;}
#tan{left:50px;	top:310px;}
#asin{left:150px; top:210px;}
#acos{left:150px; top:260px;}
#atan{left:150px; top:310px;}
#ruil{left:150px; top:360px;}
#wis{left:270px; top:110px;}
#smem1{left:270px; top:160px;}
#smem2{left:270px; top:210px;}
#rmem1{left:270px; top:260px;}
#rmem2{left:270px; top:310px;}