/* Estilos generales */
* {
margin: 0px;
padding: 0px;
}

h1 {
font: bold 20px verdana, sans-serif;
}
h2 {
font: bold 14px verdana, sans-serif;
}

header, section, footer, aside, nav, article, figure, figcaption,
hgroup{
display: block;
}


body {
text-align: center;
}

#agrupar {
width: 960px;
margin: 15px auto;
text-align: left;
}

#cabecera {
background: #FFFBB9;
border: 1px solid #999999;
padding: 20px;
}

#menu {
background: #CCCCCC;
padding: 5px 15px;
}
#menu li {
display: inline-block;
list-style: none;
padding: 5px;
font: bold 14px verdana, sans-serif;
}

#seccion {
float: right;
width: 660px;
margin: 20px;

}
#columna {
float: top;
width: 220px;
margin: 20px 0px;
padding: 20px;
background: #CCCCCC;
}

#pie {
clear: both;
text-align: center;
padding: 20px;
border-top: 2px solid #999999;
}











		
#textoprueba { font-size : 22px }
.textoprueba2 {
	font-size : 50px;
	text-align: center;
	}
	header {
  background-color: #333;
  color: #fff;
  
  text-align: center;
  padding: 1rem;
}

footer {
  background-color: #f4f4f4;
  text-align: center;
  padding: 1rem;
}

nav {
  background-color: #f4f4f4;
  text-align: center;
  padding: 1rem;
}

span {

	color: black;
    background-color: gray;
    margin: 5px;
    font-size: 25px;
        }
		
div {
width: 100px;
margin: 20px;
padding: 10px;
border: 1px solid #000000;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
box-sizing: border-box;
}