#calculadora_contenedor {
	margin: 0 auto;
	width: 280px;
	font-family: Verdana, Arial, sans-serif;
	text-align: center;
	font-size: 10px;
	font-weight: bold;
	color: #121d53;
	background-image: URL(../images/fondo2.jpg);
	background-repeat: no-repeat;
	background-color: #fff;
}
.celula {
	width: 280px;
	height: 25px;
	margin: 3px;
	line-height: 25px;
	text-align: left;
}
.left {
	text-align: left;
	float: left;
	width: 180px;
	height: 25px;
}
.right{} 
label, select, input{
	margin-top: 3px;
}