/* CSS Document */
body    {
         font-family:calibri;
        }
h1      {
         text-align: center;
        }
header, nav, main, aside, footer {
                                  border: 5px solid;
                                } 
header {
         background-color: #D3D3D3;
         border-color: black;
         height: 100px;
        } 
nav {
         background-color: #FFFF6C;
         border-color: #e7c157;
         height: 150px;
        }
main {
         background-color: white;
         border-color: #df6c20;
         height: 400px;
        } 
aside {
         background-color: #D2D2D2;
         border-color: #8db243;
         height: 50px;
        }
footer {
         background-color: #81AAEF;
         border-color: #C8C8C8;
         height: 50px;
        }