body{
text-align: center;
background: #ddd
}
.header{
background: black;
color: white;
padding: 30px;
margin: 10px0;
font: italic bold 60px tahoma;
}
ul{
list-style-type: none;padding: 0; margin: 0
}
ul li{
display: inline-block;padding: 10px
}
.navigation{
background: red;
color: green;
font: italic bold 30px arial;
}
.footer{
padding: 20px;
margin: 10px0;
background: yellow;
...
