#principal
{
  width:800px;
  position:absolute;
  top:30%;
  left:35%;  
}
body 
{ 
    background: gray;
}
#tablas
{
  border-style: solid;
    border-color: inherit;
    border-width: 1px;
    background: white;
    -webkit-border-radius: 25px;
    -moz-border-radius: 25px;
    border:1px black solid;
    width: 407px;  
}
table {
	border:1px black solid;
	border-radius:5px;
	min-width:407px;
	font-family: Helvetica,Arial;
	  background: white;
}

#caja
{
    width:407px;
    box-shadow: 10px 10px 5px #088A29;
}

table td {
	padding:1px;
}

/*Primera fila, primera celda*/
table tr:first-child td:first-child {
	border-radius:5px 0px 0px 0px;
}

/*Primera fila, última celda*/
table tr:first-child td:last-child {
	border-radius:0px 5px 0px 0px;
}

/*Última fila, primera celda*/
table tr:last-child td:first-child {
	border-radius:0px 0px 0px 5px;
}

/*Última fila, última celda*/
table tr:last-child td:last-child {
	border-radius:0px 0px 5px 0px;
}
/*Primera fila*/
table.header tr:first-child {
	font-weight: bold;
	color:#fff;
	background-color: #444;
	border-bottom:1px #000 solid;
}

/*Todas las filas a partir de la segunda*/
table.header tr:nth-child(n+2) {
	text-align: right;
}