layout - 6 (grid)

    <style>
        * {
            margin: 0;
        }
        body {
            background-color: #FFF3E0;
        }
        #wrap {
            width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-areas: 
                "header header"
                "nav nav"
                "aside contents"
                "footer footer";
            grid-template-columns: 30% 70%;
            grid-template-rows: 100px 100px 780px 100px;
        }
        #header {
            background-color: #FFE0B2;
            grid-area: header;
        }
        #nav {
            background-color: #FFCC80;
            grid-area: nav;
        }
        #aside {
            background-color: #FFB74D;
            grid-area: aside;
        }
        #contents {
            background-color: #FFA726;
            grid-area: contents;
        }
        #footer {
            background-color: #FF9800;
            grid-area: footer;
        }

        @media (max-width:1300px){
            #wrap {
                width: 96%;
            }
        }
        @media (max-width:768px){
            #wrap {
                width: 100%;
            }
        }
        @media (max-width:480px){
            #wrap {
                grid-template-areas: 
                    "header "
                    "nav "
                    "aside" 
                    "contents"
                    "footer";
                grid-template-columns: 100%;
                grid-template-rows: 100px 100px 300px 480px 100px;
            }
        }
    </style>​

    <div id="wrap">
        <div id="header"></div>
        <div id="nav"></div>
        <div id="aside"></div>
        <div id="contents"></div>
        <div id="footer"></div>
    </div>