header {
   height:80px;
   margin: 10px ;
   padding: 5px 0px 40px;
   border: 5px   green solid; 
   background-image: url(images/lavagna2.jpg);
   backgroud-repeat:repeat; 
   text-align: center;
   color: #fffb44;
   font-size: 24px;
}

aside {
     width: 28%; sfondo-acquerello
     margin: 5px ;
}
#left {
   float: left;
   font-family: Verdana;
   font-size: 1.2em;
   font-weight: bold;
 
}
#left ul{
   list-style-type: none; /*nessun punto elenco*/
}
#left a:hover {
   color: green; /*cambia colore al passaggio del mouse*/
   font-size: larger; /*cambia dimensione al passaggio del mouse*/
}
#right {
   float: right;
}
#right ul{
   list-style-type: none; /*nessun punto elenco*/
}
section {
   width: 58%;
   margin: auto;
   font-family: trebuchet ms;
   text-align: center;
   font-size: 1.2em;
   background-color: rgba(255, 251, 68,0.5) ;

   color: black;
}
footer { 
   clear: both; /* interrompe il floating*/
   height: 20px;
   margin: 10px 5px;
   background-color: yellow;
   text-align: center;
   letter-spacing: 0.5em; /*spazio tra i caratteri*/
   font-weight: bold;
}
.immaginil{
	height: 150px;
	margin:5px -30px;
}
.immaginir{
	height: 150px;
	margin:5px 50px
}
.immaginic{
	height: 150px;
	 
	margin:5px -40px
}
.immaginia{
	height: 130px;
	
	margin:5px 50px
}
.testo{
	color:white;
	margin:0px -45px;
}
.testo1{
	color:white;
	margin:0px 50px;
}
.continua {
   text-align: right;
   font-family: Arial;
   font-weight: bold;
   font-style: italic;
}
body {
   /*background-color: cyan;*/
     background-image: url(images/universe.jpg); 
     background-repeat:repeat; 
}
h3 {
   text-align: center;
   color: navy;
   font-family: Verdana;
}
hr {
   height: 5px;
   width: 300px;
   background-color: silver;
}
span {
   text-decoration: underline;
   font-weight: bold;
}
a:hover {
   color: white; /*cambia colore al passaggio del mouse*/
}