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stretch",[1592,3092,3093,3095,3098],{},[1607,3094,1739],{},[1607,3096,3097],{},"容器内项目垂直对齐",[1607,3099,3090],{},[1592,3101,3102,3104,3107],{},[1607,3103,1808],{},[1607,3105,3106],{},"单个项目水平对齐",[1607,3108,3031],{},[1592,3110,3111,3113,3116],{},[1607,3112,1821],{},[1607,3114,3115],{},"单个项目垂直对齐",[1607,3117,3031],{},[1537,3119],{},[1525,3121,3123],{"id":3122},"小节总结","🧾 小节总结",[3125,3126,3127,3130,3133,3136,3145],"ol",{},[1558,3128,3129],{},"CSS Grid 是一个强大的二维布局系统，能同时控制行和列，适合复杂布局需求。",[1558,3131,3132],{},"Grid 主要通过定义网格容器、行列轨道、以及具体子元素的位置来实现灵活排版。",[1558,3134,3135],{},"Grid 和 Flexbox 各有优势，Grid 更适合整体页面布局，Flexbox 更适合内容的一维排布。",[1558,3137,3138,3139,3141,3142,3144],{},"通过 ",[1614,3140,1687],{}," 和 ",[1614,3143,1700],{}," 设定网格轨道，利用子元素的起止线属性灵活控制元素大小和位置。",[1558,3146,3147,3148,3151],{},"Grid 支持响应式设计，可以结合媒体查询和 ",[1614,3149,3150],{},"fr"," 单位，实现自适应布局。",[1537,3153],{},[1525,3155,3157],{"id":3156},"知识问答qa","❓ 知识问答（Q&A）",[1530,3159,3160],{},"Q：Grid 布局和 Flexbox 有什么本质区别？",[1530,3162,3163],{},"A：Grid 布局是二维的，既可以控制行也可以控制列；Flexbox 是一维的，只能控制一行或一列的排列，适合不同场景。",[1530,3165,3166,3167,3169],{},"Q：",[1614,3168,3150],{}," 单位是什么？",[1530,3171,3172,3173,3175,3176,3178],{},"A：",[1614,3174,3150],{}," 表示网格容器剩余空间的分数单位，1fr 是剩余空间的一个份额，支持通过 ",[1614,3177,3150],{}," 简单分配空间。",[1530,3180,3181],{},"Q：Grid 中如何实现元素跨多行多列？",[1530,3183,3184,3185,3141,3187,3189,3190,3192],{},"A：通过设置子元素的 ",[1614,3186,1769],{},[1614,3188,1782],{},"，或者简写的 ",[1614,3191,1795],{}," 属性实现。",[1537,3194],{},[1525,3196,3198],{"id":3197},"小练习","🧪 小练习",[1550,3200,3202],{"id":3201},"练习-1创建一个-4-列的响应式网格","练习 1：创建一个 4 列的响应式网格",[1530,3204,3205],{},"请用 Grid 创建一个包含 4 列的网格布局，列宽相等，间距 15px，高度固定为 150px。",[1841,3207,3209],{"className":1843,"code":3208,"language":1845,"meta":1846,"style":1846},"\u003Cdiv class=\"grid-container\">\n    \u003Cdiv class=\"grid-item\">1\u003C/div>\n    \u003Cdiv class=\"grid-item\">2\u003C/div>\n    \u003Cdiv class=\"grid-item\">3\u003C/div>\n    \u003Cdiv class=\"grid-item\">4\u003C/div>\n    \u003Cdiv class=\"grid-item\">5\u003C/div>\n    \u003Cdiv class=\"grid-item\">6\u003C/div>\n    \u003Cdiv class=\"grid-item\">7\u003C/div>\n    \u003Cdiv class=\"grid-item\">8\u003C/div>\n\u003C/div>\n\n\u003Cstyle>\n    .grid-container {\n        display: grid;\n        grid-template-columns: repeat(4, 1fr);\n        grid-gap: 15px;\n        height: 150px;\n    }\n    .grid-item {\n        background-color: #9bf6ff;\n        border: 1px solid #333;\n        text-align: center;\n        line-height: 150px;\n        font-weight: bold;\n    }\n\u003C/style>\n",[1614,3210,3211,3230,3257,3283,3309,3335,3361,3387,3413,3439,3447,3451,3459,3467,3477,3495,3506,3517,3521,3529,3542,3558,3568,3578,3590,3594],{"__ignoreMap":1846},[1850,3212,3213,3215,3217,3219,3221,3223,3226,3228],{"class":1852,"line":1853},[1850,3214,1857],{"class":1856},[1850,3216,1861],{"class":1860},[1850,3218,1865],{"class":1864},[1850,3220,1868],{"class":1856},[1850,3222,1871],{"class":1856},[1850,3224,3225],{"class":1874},"grid-container",[1850,3227,1871],{"class":1856},[1850,3229,1880],{"class":1856},[1850,3231,3232,3234,3236,3238,3240,3242,3245,3247,3249,3251,3253,3255],{"class":1852,"line":1883},[1850,3233,1886],{"class":1856},[1850,3235,1861],{"class":1860},[1850,3237,1865],{"class":1864},[1850,3239,1868],{"class":1856},[1850,3241,1871],{"class":1856},[1850,3243,3244],{"class":1874},"grid-item",[1850,3246,1871],{"class":1856},[1850,3248,1902],{"class":1856},[1850,3250,2488],{"class":1905},[1850,3252,1909],{"class":1856},[1850,3254,1861],{"class":1860},[1850,3256,1880],{"class":1856},[1850,3258,3259,3261,3263,3265,3267,3269,3271,3273,3275,3277,3279,3281],{"class":1852,"line":1916},[1850,3260,1886],{"class":1856},[1850,3262,1861],{"class":1860},[1850,3264,1865],{"class":1864},[1850,3266,1868],{"class":1856},[1850,3268,1871],{"class":1856},[1850,3270,3244],{"class":1874},[1850,3272,1871],{"class":1856},[1850,3274,1902],{"class":1856},[1850,3276,2515],{"class":1905},[1850,3278,1909],{"class":1856},[1850,3280,1861],{"class":1860},[1850,3282,1880],{"class":1856},[1850,3284,3285,3287,3289,3291,3293,3295,3297,3299,3301,3303,3305,3307],{"class":1852,"line":1944},[1850,3286,1886],{"class":1856},[1850,3288,1861],{"class":1860},[1850,3290,1865],{"class":1864},[1850,3292,1868],{"class":1856},[1850,3294,1871],{"class":1856},[1850,3296,3244],{"class":1874},[1850,3298,1871],{"class":1856},[1850,3300,1902],{"class":1856},[1850,3302,2542],{"class":1905},[1850,3304,1909],{"class":1856},[1850,3306,1861],{"class":1860},[1850,3308,1880],{"class":1856},[1850,3310,3311,3313,3315,3317,3319,3321,3323,3325,3327,3329,3331,3333],{"class":1852,"line":1972},[1850,3312,1886],{"class":1856},[1850,3314,1861],{"class":1860},[1850,3316,1865],{"class":1864},[1850,3318,1868],{"class":1856},[1850,3320,1871],{"class":1856},[1850,3322,3244],{"class":1874},[1850,3324,1871],{"class":1856},[1850,3326,1902],{"class":1856},[1850,3328,2569],{"class":1905},[1850,3330,1909],{"class":1856},[1850,3332,1861],{"class":1860},[1850,3334,1880],{"class":1856},[1850,3336,3337,3339,3341,3343,3345,3347,3349,3351,3353,3355,3357,3359],{"class":1852,"line":1981},[1850,3338,1886],{"class":1856},[1850,3340,1861],{"class":1860},[1850,3342,1865],{"class":1864},[1850,3344,1868],{"class":1856},[1850,3346,1871],{"class":1856},[1850,3348,3244],{"class":1874},[1850,3350,1871],{"class":1856},[1850,3352,1902],{"class":1856},[1850,3354,2596],{"class":1905},[1850,3356,1909],{"class":1856},[1850,3358,1861],{"class":1860},[1850,3360,1880],{"class":1856},[1850,3362,3363,3365,3367,3369,3371,3373,3375,3377,3379,3381,3383,3385],{"class":1852,"line":1988},[1850,3364,1886],{"class":1856},[1850,3366,1861],{"class":1860},[1850,3368,1865],{"class":1864},[1850,3370,1868],{"class":1856},[1850,3372,1871],{"class":1856},[1850,3374,3244],{"class":1874},[1850,3376,1871],{"class":1856},[1850,3378,1902],{"class":1856},[1850,3380,2623],{"class":1905},[1850,3382,1909],{"class":1856},[1850,3384,1861],{"class":1860},[1850,3386,1880],{"class":1856},[1850,3388,3389,3391,3393,3395,3397,3399,3401,3403,3405,3407,3409,3411],{"class":1852,"line":1998},[1850,3390,1886],{"class":1856},[1850,3392,1861],{"class":1860},[1850,3394,1865],{"class":1864},[1850,3396,1868],{"class":1856},[1850,3398,1871],{"class":1856},[1850,3400,3244],{"class":1874},[1850,3402,1871],{"class":1856},[1850,3404,1902],{"class":1856},[1850,3406,2650],{"class":1905},[1850,3408,1909],{"class":1856},[1850,3410,1861],{"class":1860},[1850,3412,1880],{"class":1856},[1850,3414,3415,3417,3419,3421,3423,3425,3427,3429,3431,3433,3435,3437],{"class":1852,"line":2010},[1850,3416,1886],{"class":1856},[1850,3418,1861],{"class":1860},[1850,3420,1865],{"class":1864},[1850,3422,1868],{"class":1856},[1850,3424,1871],{"class":1856},[1850,3426,3244],{"class":1874},[1850,3428,1871],{"class":1856},[1850,3430,1902],{"class":1856},[1850,3432,2677],{"class":1905},[1850,3434,1909],{"class":1856},[1850,3436,1861],{"class":1860},[1850,3438,1880],{"class":1856},[1850,3440,3441,3443,3445],{"class":1852,"line":2026},[1850,3442,1909],{"class":1856},[1850,3444,1861],{"class":1860},[1850,3446,1880],{"class":1856},[1850,3448,3449],{"class":1852,"line":2045},[1850,3450,1985],{"emptyLinePlaceholder":1984},[1850,3452,3453,3455,3457],{"class":1852,"line":2058},[1850,3454,1857],{"class":1856},[1850,3456,1993],{"class":1860},[1850,3458,1880],{"class":1856},[1850,3460,3461,3463,3465],{"class":1852,"line":2071},[1850,3462,2001],{"class":1856},[1850,3464,3225],{"class":2004},[1850,3466,2007],{"class":1856},[1850,3468,3469,3471,3473,3475],{"class":1852,"line":2077},[1850,3470,2014],{"class":2013},[1850,3472,2017],{"class":1856},[1850,3474,2020],{"class":1905},[1850,3476,2023],{"class":1856},[1850,3478,3479,3481,3483,3485,3487,3489,3491,3493],{"class":1852,"line":2086},[1850,3480,2029],{"class":2013},[1850,3482,2017],{"class":1856},[1850,3484,2758],{"class":2757},[1850,3486,2761],{"class":1856},[1850,3488,2569],{"class":2034},[1850,3490,2766],{"class":1856},[1850,3492,2035],{"class":2034},[1850,3494,2771],{"class":1856},[1850,3496,3497,3499,3501,3504],{"class":1852,"line":2102},[1850,3498,2048],{"class":2013},[1850,3500,2017],{"class":1856},[1850,3502,3503],{"class":2034}," 15px",[1850,3505,2023],{"class":1856},[1850,3507,3508,3510,3512,3515],{"class":1852,"line":2114},[1850,3509,2061],{"class":2013},[1850,3511,2017],{"class":1856},[1850,3513,3514],{"class":2034}," 150px",[1850,3516,2023],{"class":1856},[1850,3518,3519],{"class":1852,"line":2136},[1850,3520,2074],{"class":1856},[1850,3522,3523,3525,3527],{"class":1852,"line":2149},[1850,3524,2001],{"class":1856},[1850,3526,3244],{"class":2004},[1850,3528,2007],{"class":1856},[1850,3530,3531,3533,3535,3537,3540],{"class":1852,"line":2154},[1850,3532,2089],{"class":2013},[1850,3534,2017],{"class":1856},[1850,3536,2094],{"class":1856},[1850,3538,3539],{"class":1905},"9bf6ff",[1850,3541,2023],{"class":1856},[1850,3543,3544,3546,3548,3550,3552,3554,3556],{"class":1852,"line":2429},[1850,3545,2117],{"class":2013},[1850,3547,2017],{"class":1856},[1850,3549,2122],{"class":2034},[1850,3551,2125],{"class":1905},[1850,3553,2128],{"class":1856},[1850,3555,2131],{"class":1905},[1850,3557,2023],{"class":1856},[1850,3559,3560,3562,3564,3566],{"class":1852,"line":2434},[1850,3561,2139],{"class":2013},[1850,3563,2017],{"class":1856},[1850,3565,2144],{"class":1905},[1850,3567,2023],{"class":1856},[1850,3569,3570,3572,3574,3576],{"class":1852,"line":2840},[1850,3571,2871],{"class":2013},[1850,3573,2017],{"class":1856},[1850,3575,3514],{"class":2034},[1850,3577,2023],{"class":1856},[1850,3579,3580,3583,3585,3588],{"class":1852,"line":2857},[1850,3581,3582],{"class":2013},"        font-weight",[1850,3584,2017],{"class":1856},[1850,3586,3587],{"class":1905}," bold",[1850,3589,2023],{"class":1856},[1850,3591,3592],{"class":1852,"line":2868},[1850,3593,2074],{"class":1856},[1850,3595,3596,3598,3600],{"class":1852,"line":2880},[1850,3597,1909],{"class":1856},[1850,3599,1993],{"class":1860},[1850,3601,1880],{"class":1856},[1530,3603,3604],{},"请拷贝到编辑器中去尝试预览体验吧！",[1537,3606],{},[1550,3608,3610],{"id":3609},"练习-2制作一个卡片布局卡片跨两列显示","练习 2：制作一个卡片布局，卡片跨两列显示",[1530,3612,3613],{},"请利用 Grid 实现一个卡片列表，其中第一个卡片占据两列宽度，其余卡片每个占一列。",[1841,3615,3617],{"className":1843,"code":3616,"language":1845,"meta":1846,"style":1846},"\u003Cdiv class=\"card-container\">\n    \u003Cdiv class=\"card card-large\">大卡片\u003C/div>\n    \u003Cdiv class=\"card\">卡片1\u003C/div>\n    \u003Cdiv class=\"card\">卡片2\u003C/div>\n    \u003Cdiv class=\"card\">卡片3\u003C/div>\n    \u003Cdiv class=\"card\">卡片4\u003C/div>\n\u003C/div>\n\n\u003Cstyle>\n    .card-container {\n        display: grid;\n        grid-template-columns: repeat(3, 1fr);\n        grid-gap: 12px;\n    }\n    .card {\n        background-color: #b5ead7;\n        border: 1px solid #333;\n        padding: 20px;\n        text-align: center;\n        font-size: 18px;\n    }\n    .card-large {\n        grid-column: span 2;\n        background-color: #ffcbf2;\n    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