button{width: 200px; height: 50px;}

header{text-align:center; color: white; font-size:30px; align-items: center;}

fieldset{text-align:center; align-items: center;  background-color: black;}

table.center{ margin-left:auto; margin-right:auto; background-color:white; width:490px; height:30px; text-align: justify;}


p{ text-align:center; width:490px; height:30px; background-color: lime;}

h1{color: white; text-align: center;}

.centrado{
  display:block;
  margin-left: auto;
  margin-right: auto;
}

body{
	font-weight: bold;	
	background-position: center center;
	background-attachment: fixed;
}