body{
background-color:green;
font-family:san-serif;	
font-size:15px}


h1{
color:white;
text-align:justify;
text-shadow:5px 5px black;
font-family:san-serif;
text-transform:uppercase ;
text-align: left;
 }
 p{
	 text-align: justify;
	 
 }
.uno{color:black;
text-align:left;
text-align:justify;
border:15px solid black ;
border-radius:30px ;
margin-left:350px ;
margin-right:350px ;
padding:25px ; 
background-color:white;
border-style:black
}
.izquierda{
	float:left;
	margin-left:;
	margin-right:;
	
	
}
.centro{
	margin:10px auto;
display:block;
}