header {
    	background-color: green;
       padding: 20px;
    	color: white;
    	text-align: center;
       font-family: "comic Sans Ms", Default;
       }


nav{
       overflow: hidden;
       background-color: #333;

}
nav a{
       color: #fff;
       padding: 14px;
       text-decoration: none;
}
nav a:hover{
       background-color: red;
       color: black;
}
.column{
       float: left;
       padding: 10px;

}
.column.middle{
       padding: 10px;
       width: 30%;
}
.column.side{
       width: 30%;
}
p{
       text-align: justify;
}

body{
       margin: 0;
       background-color: violet;
}