批改状态:合格
老师批语:
基本属性 属性说明 属性值 值说明 flex项目的缩放比例与基准宽度 0 1 auto / initial默认,禁止放大,允许收缩,宽度自动 1 1 auto / auto允许放大和收缩 0 0 auto / none禁止放大和收缩/PC布局 align-self单个项目在交叉轴上的对齐方式 stretch默认,拉伸 flex-start起始线 flex-end终止线 center居中 order项目在主轴上排列顺序 不写 显示顺序:默认按书写的源码顺序排列 【数字】序号越小越靠前,越大越靠后,可以为负值
flex
0 0 10rem与1 0 10rem,同基准下允许放大对比
<!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项目属性</title><style>main {display: flex;height: 10rem;flex-flow: row nowrap;}main div,.cols div {background-color: lightblue;border: 1px solid #0C0C0C;}main div{flex:0 0 10rem;}.cols {display: flex;height: 10rem;flex-flow: row nowrap;}.cols div {flex:1 0 10rem;}</style></head><body><main><div>item1</div><div>item2</div><div>item3</div><div>item4</div></main><div class="cols"><div>colm1</div><div>colm2</div><div>colm3</div><div>colm4</div></div></body></html>
1 0 10rem与1 1 10rem,同基准下允许收缩对比
<!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项目属性</title><style>main {display: flex;height: 10rem;flex-flow: row nowrap;}main div,.cols div {background-color: lightblue;border: 1px solid #0C0C0C;}main div{flex:1 0 10rem;}.cols {display: flex;height: 10rem;flex-flow: row nowrap;}.cols div {flex:1 1 10rem;}</style></head><body><main><div>item1</div><div>item2</div><div>item3</div><div>item4</div></main><div class="cols"><div>colm1</div><div>colm2</div><div>colm3</div><div>colm4</div></div></body></html>
项目占比为fiex的值*1/1+2+3+4
<!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项目属性</title><style>main {display: flex;height: 10rem;flex-flow: row nowrap;}main div {background-color: lightblue;border: 1px solid #0C0C0C;}main div:nth-of-type(1) {flex: 1;}main div:nth-of-type(2) {flex: 2;}main div:nth-of-type(3) {flex: 3;}main div:nth-of-type(4) {flex: 4;}</style></head><body><main><div>item1</div><div>item2</div><div>item3</div><div>item4</div></main></body></html>
align-self
<!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项目属性</title><style>main {display: flex;height: 20rem;width: 40rem;flex-flow: row nowrap;/*align-items: center;*/}main div {background-color: lightblue;}main :nth-of-type(1) {align-self: stretch;}main :nth-of-type(2) {align-self: flex-start;}main :nth-of-type(3) {align-self: center;}main :nth-of-type(4) {align-self: flex-end;}</style></head><body><main><div>item1</div><div>item2</div><div>item3</div><div>item4</div><div>item5</div><div>item6</div><div>item7</div><div>item8</div><div>item9</div><div>item10</div><div>item11</div><div>item12</div></main></body></html>
order
<!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项目属性</title><style>main {display: flex;height: 10rem;width: 40rem;flex-flow: row nowrap;/*align-items: center;*/}.order {display: flex;height: 10rem;width: 40rem;flex-flow: row nowrap;}main div {background-color: lightblue;border: 1px solid #0C0C0C;}.order div {background-color: lightgrey;border: 1px solid #0C0C0C;}.order div:nth-of-type(2) {order: 100;}.order div:nth-of-type(4) {order: -1;}</style></head><body><main><div>item1</div><div>item2</div><div>item3</div><div>item4</div></main><div class="order"><div>order1</div><div>order2</div><div>order3</div><div>order4</div></div></body></html>

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* {margin: 0;padding: 0;box-sizing: border-box;}li {list-style: none;}a {text-decoration: none;color: #7b7b7b;}:root {font-size: 10px;}body {color: aliceblue;}@media screen and (min-width: 480px) {:root {font-size: 12px;}}@media screen and (min-width: 640px) {:root {font-size: 14px;}}@media screen and (min-width: 720px) {:root {font-size: 16px;}}
@import url(reset.css);header {position: fixed;height: 4.4rem;left: 0;top: 0;right: 0;background-color: #e43130;z-index: 100;}main {position: absolute;left: 0;right: 0;top: 4.4rem;bottom: 4.4rem;}footer {position: fixed;height: 4.4rem;left: 0;right: 0;bottom: 0;background-color: #ffffff;z-index: 100;}
.header {display: flex;flex-flow: row nowrap;align-items: center;}.header .menu {flex: 1;color: #ffecec;text-align: center;font-size: 2.5rem;}.header .login {flex: 1;color: #ffecec;text-align: center;font-size: 2rem;}.header .search {flex: 6;padding: 0.5rem;display: flex;align-items: center;background-color: #ffffff;border-radius: 3rem;}.header .search .logo {flex: 0 1 4rem;color: #e43130;font-size: 2rem;line-height: 2rem;text-align: center;}.header .search .icon-search {flex: 0 1 4rem;color: #7b7b7b;border-left: 1px solid #7b7b7b;line-height: 2rem;text-align: center;}.header .search :last-child {flex: auto;color: #7b7b7b;border: none;outline: none;}
.footer {color: rgb(119, 119, 119);display: flex;justify-content: space-around;align-items: center;}.footer div {display: flex;flex-flow: column wrap;justify-content: center;align-items: center;font-size: 2rem;}.footer div span {font-size: 1rem;}.footer div:hover {cursor: pointer;}
.main .nav {display: flex;flex-flow: row wrap;justify-content: space-around;align-items: center;}main .nav li {flex: 1 1 20%;padding: 0.5rem;display: flex;flex-flow: column wrap;justify-content: center;align-items: center;}main .nav li a img {height: 4rem;}
.main {background-color: #f6f6f6;}.main .seckill {display: flex;flex-flow: column;background-color: #fff;border-radius: 1rem;margin: 1rem;}.main .seckill .seckill-top {display: flex;flex-flow: row nowrap;justify-content: space-between;padding: 0.5rem;}.main .seckill .seckill-top .left {display: flex;}.main .seckill .seckill-top .left .title {font-size: 1.5rem;color: #979797;}.main .seckill .seckill-top .left .notice {display: flex;font-size: 1.2rem;color: #e43130;}.main .seckill .seckill-top .right {font-size: 1.2rem;color: #979797;}.main .seckill .seckill-body {display: flex;justify-content: space-between;}.main .seckill .seckill-body .item {display: flex;flex-flow: column wrap;justify-content: center;align-items: center;}.main .seckill .seckill-body .item img {height: 8rem;width: 8rem;}.main .seckill .seckill-body .item > :nth-child(2) {color: #e43130;font-size: small;}.main .seckill .seckill-body .item > :last-child {color: #979797;font-size: small;text-decoration: line-through;}
.main > h2 {color: #777;text-align: center;font-size: 2rem;height: 3rem;line-height: 3rem;}.main .love {font-size: 1rem;display: flex;flex-flow: row wrap;justify-content: space-between;}.main .love .item {flex: 1 0 calc(50% - 2rem);background-color: #fff;overflow: hidden;display: flex;flex-flow: column wrap;margin-left: 1rem;margin-bottom: 1rem;border-radius: 1rem;padding-bottom: 1rem;padding: 1rem;color: #777;}.main .love .item img {width: 100%;height: 100%;}.main .love .item .price {display: flex;justify-content: space-between;align-items: center;}.main .love .item .price div:first-of-type {color: #e43130;padding: 0.2rem 1rem;}.main .love .item .price div:last-of-type {color: #666;background-color: #979797;border-radius: 1rem;padding: 0.2rem 1rem;}
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