header{
    border: 3px red solid;
    height:20% ;
}

nav{
    border: 3px blue solid;
    height:60% ;
}

footer{
    border: 3px yellow solid;
    height:20% ;
}

li.menu{
    list-style-type: none;
    display: inline;
    margin: 10px;
    border: 2px lightgreen solid;
    padding: 3px;
}

div.logo{
    display: inline;
    border: 1px red solid;
}

div.menu{
    display: inline;
    width: 20px;
    border: 1px blue solid;
    padding: 4px;
}

ul{
    display: inline;
    width: 20%;
    border: 2px red solid;
    padding: px;
}