<body>
    <div id="wrap">
        <div id="header"></div>
        <div id="nav"></div>
        <div id="main">
            <div id="aside"></div>
            <div id="article1"></div>
            <div id="article2"></div>
            <div id="article3"></div>
        </div>
        <div id="footer"></div>
    </div>
    <!-- 
        layout03_01 : float 방식 레이아웃
        layout03_02 : float 방식 반응형 레이아웃
        layout03_03 : flex 방식 레이아웃
        layout03_04 : flex 방식 반응형 레이아웃
        layout03_05 : grid 방식 레이아웃->복잡한 레이아웃을 편하게 가능함
        layout03_06 : grid 방식 반응형 레이아웃 
    -->
</body>
        * {
            margin: 0;
            padding: 0;
        }
        body {
            background-color: #E1F5FE;
        }
        #wrap {
            width: 1200px;
            margin: 0 auto;
        }
        #header {
            height: 100px;
            background-color: #B3E5FC;
        }
        #nav {
            height: 100px;
            background-color: #81D4FA;
        }
        #main {
            display: grid;
            grid-template-areas: 
                "aside article1 article1"
                "aside article2 article2"
                "aside article3 article3" ;
            grid-template-columns: 30% 70%;
            grid-template-rows: 260px 260px 260px;
        }
        #aside {
            background-color: #4FC3F7;
            grid-area: aside;
        }
        #article1 {
            background-color: #29B6F6;
            grid-area: article1;

        }
    
        #article2 {
            background-color: #03A9F4;
            grid-area: article2;

        }
        #article3 {
            background-color: #039BE5;
            grid-area: article3;
        }
    
        #footer {
            height: 100px;
            background-color: #0288D1;
        }
    
        /* 미디어쿼리 */
        @media (max-width: 1300px){
            #wrap {
                width: 96%;
            }
            #main {
                grid-template-areas: 
                    "aside article1 article1"
                    "aside article2 article3"
                    "aside article2 article3" ;
                grid-template-columns: 30% 35% 35%;
                grid-template-rows: 260px 520px;
            }
        }
        @media (max-width: 768px){
            #wrap {
                width: 100%;
            }
            #main {
                grid-template-areas: 
                    "aside article1"
                    "aside article2" ;
                grid-template-columns: 30% 70%;
                grid-template-rows: 390px 390px;
            }
            #article3 {
                display: none;
            }
        }
        @media (max-width: 480px){
            #main {
                grid-template-areas: 
                    "aside"
                    "article1"
                    "article2";
                grid-template-columns: 100%;
                grid-template-rows: 200px 430px 150px;
            }
        }

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