header {
    background-color:black;
     color:white;
     text-align:center;
    padding:5px;
}


nav {
   
line-height:30px;
     background-color:#eeeeee;
    height:100%;
    width:100%;
    text-align:left;
     padding:25px; 
}

aside {
    
    border-style: solid;
    border-color: #eeeeee;
     background-color:#c0c0c0;
    
    
     float:left;
     padding:5px; 
     margin-right:15px
}

section {

height:100%;
    width:100%;
    text-align:center;
     padding:20px; 
}

article {
border-style: solid;
    border-color: #eeeeee;
    background-color:white;
     color:black;
     text-align:left;
    padding:5px;
}





footer {
    background-color:blue;
     color:white;
    clear:both;
    text-align:center;
     padding:5px; 
}