body                    {
                            margin: 5px;
                            font-family: Calibri;
                            background: #95391C;
                            display: grid;
                            grid-template-columns: 1fr;
                            grid-template-areas:    "head"
                                                    "nav"
                                                    "main"
                                                    "aside"
                                                    "foot";
                        }

@media (min-width: 30em) {
body                     {
                            grid-template-columns: repeat(2,1fr);
                            grid-template-areas: "head head"
                                                 "nav aside"
                                                 "main main"
                                                 "foot foot";
                        }
                        }

@media (min-width: 50em) {
body                     {
                            grid-template-columns: repeat(4,1fr);
                            grid-template-areas: "head head head head"
                                                 "nav main main aside"
                                                 "foot foot foot foot";
                         }
                         }
h1 {
   text-align: center;
   font-size: 50px;
}


header, nav, main, article, aside, footer {
   border: 5px solid;
   padding: 10px;
   margin: 2px;
}

header {
   background-color: #D3D3D3;
   border-color: #B0B0B0;
   grid-area: head;
}

nav {
   background-color: #FFFBF0;
   border-color: #E7C157;
   grid-area: nav;
}

main {
   background-color: #FFFFFF;
   border-color: #DF6C20;
   grid-area: main;
}

aside {
   background-color: #FFFBF0;
   border-color: #8DB243;
   grid-area: aside;
}

footer {
   background-color: #D3D3D3;
   border-color: #B0B0B0;
   grid-area: foot;
}