批改状态:合格
老师批语:
1.任何元素都可以通过display:flex属性来转换为弹性盒子元素
2.使用display:flex属性的元素叫flex容器
3.flex容器中的元素叫做flex项目
4.flex容器中的flex项目都会变成行内块元素
5.转变为flex元素后,它内部子元素就支持flex布局
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>弹性容器与弹性项目</title><style>*{box-sizing: border-box;}.main{display: flex;border: 1px solid;height: 20em;}.main>.imt{border: 1px solid;width: 10em;height: 8em;}</style></head><body><div class="main"><div class="imt">imt1</div><div class="imt">imt2</div><div class="imt">imt3</div></div></body></html>
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>flex排列方式</title><style>*{box-sizing: border-box;}.main{display: flex;height: 15em;border: 1px solid;}/* 单行排列 */.text{width: 5em;border: 1px solid;}.main{flex-flow: row nowrap;}/* 多行排列 */.text{width: 5em;height: 5em;border: 1px solid;}.main{flex-flow: row wrap;}/* 主轴为列 */.text{width: 5em;height: 5em;border: 1px solid;}.main{flex-flow: column nowrap;}/*列换行 */.text{width: 5em;height: 5em;border: 1px solid;}.main{flex-flow: column wrap;}</style></head><body><div class="main"><div class="text">text1</div><div class="text">text2</div><div class="text">text3</div><div class="text">text4</div><div class="text">text5</div><div class="text">text6</div><div class="text">text7</div><div class="text">text8</div></div></body></html>
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>弹性项目在主轴上的排列方式</title><style>*{box-sizing: border-box;}.main{display: flex;height: 10em;border: 1px solid;}.text{width: 4em;/* height: 2em; */border: 1px solid;}/* 设置在单行容器上对齐前提:主轴上存在剩余空间 *//* 空间分配有两种 *//* 1.将所有项目视为一体,在项目两边进行分配 */.main{justify-content: center;justify-content: flex-start;justify-content: flex-end;}/* 2.将项目分为一个个独立的个体,在项目之间分配 */.main{/* 分散对齐 */justify-content: space-around;/* 两端对齐 */justify-content: space-between;/* 平均对齐 */justify-content: space-evenly;}/* 交叉轴对齐方式 */.main{/* 默认拉伸 */align-items: stretch;/* 顶部对齐 */align-items: flex-start;/* 底部对齐 */align-items: flex-end;/* 居中 */align-items: center;}/* 注意:单行容器切项目在主轴排列,交叉轴不存在适应空间.原因是单行容器,在交叉轴上只有一行没有多行 */</style></head><body><div class="main"><div class="text">text1</div><div class="text">text2</div><div class="text">text3</div><div class="text">text4</div></div></body></html>
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>flex对齐方式</title><style>*{box-sizing: border-box;}.main{display: flex;height: 10em;border: 1px solid;}.text{width: 4em;height: 2em;border: 1px solid;}/* 设置在单行容器上对齐前提:主轴上存在剩余空间 *//* 空间分配有两种 *//* 1.将所有项目视为一体,在项目两边进行分配 */.main{flex-flow: row wrap;}.main{align-content: center;align-content: flex-start;align-content: flex-end;align-content: space-around;align-content: space-between;align-content: space-evenly;}</style></head><body><div class="main"><div class="text">text1</div><div class="text">text2</div><div class="text">text3</div><div class="text">text4</div><div class="text">text5</div><div class="text">text6</div><div class="text">text7</div><div class="text">text8</div><div class="text">text9</div><div class="text">text10</div><div class="text">text11</div><div class="text">text12</div><div class="text">text1</div><div class="text">text2</div><div class="text">text3</div><div class="text">text4</div><div class="text">text5</div><div class="text">text6</div><div class="text">text7</div><div class="text">text8</div><div class="text">text9</div><div class="text">text10</div><div class="text">text11</div><div class="text">text12</div></div></body></html>
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