body{
font-family:Arial;
margin:0;
}

header{
background:#2c7a2c;
color:white;
padding:20px;
text-align:center;
}

nav a{
color:white;
margin:10px;
text-decoration:none;
}

section{
padding:40px;
}

footer{
background:#222;
color:white;
text-align:center;
padding:20px;
}