<body>
    <div id="wrap">
        <header id="header"></header>
        <nav id="nav"></nav>
        <main id="main">
            <aside id="aside"></aside>
            <section id="section"></section>
            <article id="article"></article>
        </main>
        <footer id="footer"></footer>
    </div>
    <!-- 
        layout02_01 : float 방식 레이아웃
        layout02_02 : float 방식 반응형 레이아웃
        layout02_03 : flex 방식 레이아웃
        layout02_04 : flex 방식 반응형 레이아웃
        layout02_05 : grid 방식 레이아웃->복잡한 레이아웃을 편하게 가능함
        layout02_06 : grid 방식 반응형 레이아웃

     -->
</body>
* {
            margin: 0;
            padding: 0;
        }
        body {
            background-color: #E8F5E9;
        }
        #wrap {
            width: 1200px;
            margin: 0 auto;
        }
        #header {
            height: 100px;
            background-color: #C8E6C9;
        }
        
        #nav {
            height: 100px;
            background-color: #A5D6A7;
        }
        #main {
            display: grid;
            grid-template-columns: 30% 40% 30%;
            grid-template-rows: 780px;
        }
        #aside {
            background-color: #81C784;
        }
        #section {
            background-color: #66BB6A;
        }
    
        #article {
            background-color: #4CAF50;
        }
    
        #footer {
            height: 100px;
            background-color: #43A047;
        }
    
        /* 미디어쿼리 */
        @media (max-width:1300px){
            #wrap {width: 96%;
            }
            
        }
        @media (max-width:768px){
            #main {
                grid-template-areas: 
                    "aside section"
                    "article article"
                ;
                grid-template-columns: 30% 70%;
                grid-template-rows: 680px 150px; 
            }
            #aside {
                grid-area: aside;
            }
            #section {
                grid-area: section;
            }
            #article {
                grid-area: article;
            }
    
        }  
        @media (max-width:480px){
            #main {
                grid-template-areas: 
                    "aside"
                    "section"
                    "article" 
                ;
                grid-template-columns: 100%;
                grid-template-rows: 200px 430px 150px; 
            }
            #aside {
                grid-area: aside;
            }
            #section {
                grid-area: section;
            }
            #article {
                grid-area: article;
            }
    
        }

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