layout/flex.html at master · qiuzhixian/layout · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>flex</title>
    <style>
        .box {
            display: flex;
        }

        .box .item {
            margin: 10px;
            height: 50px;
            width: 50px;
            line-height: 50px;
            background: rgb(130, 241, 3);
            text-align: center;
            color: #fff;
            border-radius: 6px;
        }

        .box .item-all {
            height: 70px;
        }

        .box-1 {
            flex-direction: row;
        }

        .box-2 {
            flex-wrap: nowrap;
        }

        .box-3 {
            flex-flow: row nowrap;
        }

        .box-4 {
            justify-content: flex-end;
        }

        .box-5 {
            align-items: center;
        }

        .box-6 {
            align-content: center;
        }

        .box .order {
            order: -1;
            background: #bbbbbb;
        }

        .box .grow {
            flex-grow: 1;
            background: #bbbbbb
        }

        .box-9 .item {
            width: 100px;
        }

        .box .shrink {
            flex-shrink: 2;
            background: #bbbbbb;
        }

        .box-10 {
            flex-basis: 1;
        }

        .box .basis {
            flex-basis: auto;
            background: #bbbbbb;
        }

        .box .flex {
            flex: 3;
            background: #bbbbbb;
        }

        .box .start {
            height: 30px;
            align-self: flex-start;
            background: #bbbbbb;
        }

        .box .self {
            height: 30px;
            align-self: flex-end;
            background: #bbbbbb;
        }
    </style>
</head>

<body>
    <div>容器的属性</div>
    <ul>
        <li>flex-direction</li>
        <li>flex-wrap</li>
        <li>flex-flow</li>
        <li>justify-content</li>
        <li>align-items</li>
        <li>align-content</li>
    </ul>
    <div class="felx-direction">
        <h1>flex-direction</h1>
        <p>flex-direction属性决定主轴的方向（即项目的排列方向）。</p>
        <p>
            .box { flex-direction: row | row-reverse | column | column-reverse; }
        </p>
    </div>
    <div class="box box-1">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
    </div>

    <div class="flex-wrap">
        <h1>flex-wrap</h1>
        <p>flex-wrap属性定义，如果一条轴线排不下，如何换行。</p>
        <p>.box{ flex-wrap: nowrap | wrap | wrap-reverse; }
        </p>
    </div>
    <div class="box box-2">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
        <div class="item">F</div>
        <div class="item">G</div>
        <div class="item">H</div>
        <div class="item">I</div>
        <div class="item">J</div>
    </div>

    <div class="flex-flow">
        <h1>flex-flow</h1>
        <p>flex-flow属性是flex-direction属性和flex-wrap属性的简写形式，默认值为row nowrap。</p>
        <p>.box { flex-flow:
            <flex-direction> ||
                <flex-wrap>; }
        </p>
    </div>
    <div class="box box-3">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
        <div class="item">F</div>
        <div class="item">G</div>
        <div class="item">H</div>
        <div class="item">I</div>
        <div class="item">J</div>
    </div>
    <div class="justify-content">
        <h1>justify-content</h1>
        <p>justify-content属性定义了项目在主轴上的对齐方式。</p>
        <p>.box { justify-content: flex-start | flex-end | center | space-between | space-around; }
        </p>
    </div>
    <div class="box box-4">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
    </div>

    <div class="align-items">
        <h1>align-items</h1>
        <p>align-items属性定义项目在交叉轴上如何对齐。</p>
        <p>.box { align-items: flex-start | flex-end | center | baseline | stretch; }
        </p>
    </div>
    <div class="box box-5">
        <div class="item item-all">A</div>
        <div class="item">B</div>
        <div class="item item-all">C</div>
        <div class="item">D</div>
        <div class="item item-all">E</div>
        <div class="item">F</div>
        <div class="item">G</div>
    </div>

    <div class="align-content">
        <h1>align-content</h1>
        <p>align-content属性定义了多根轴线的对齐方式。如果项目只有一根轴线，该属性不起作用。</p>
        <p>.box { align-content: flex-start | flex-end | center | space-between | space-around | stretch; }
        </p>
    </div>

    <div class="box box-6">
        <div class="item item-all">A</div>
        <div class="item">B</div>
        <div class="item item-all">C</div>
        <div class="item">D</div>
        <div class="item item-all">E</div>
        <div class="item">F</div>
        <div class="item">G</div>
    </div>
    <br/>
    <div>项目的属性</div>
    <ul>
        <li>order</li>
        <li>flex-grow</li>
        <li>flex-shrink</li>
        <li>flex-basis</li>
        <li>flex</li>
        <li>align-self</li>
    </ul>

    <div class="order">
        <h1>order</h1>
        <p>order属性定义项目的排列顺序。数值越小，排列越靠前，默认为0。</p>
        <p>.item { order:
            <integer>; }
        </p>
    </div>
    <div class="box box-7">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item order">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
    </div>

    <div class="flex-grow">
        <h1>flex-grow</h1>
        <p>flex-grow属性定义项目的放大比例，默认为0，即如果存在剩余空间，也不放大。</p>
        <p>.item { flex-grow:
            <number>; /* default 0 */ }
        </p>
    </div>
    <div class="box box-8">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item grow">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
    </div>

    <div class="flex-shrink">
        <h1>flex-shrink</h1>
        <p>flex-shrink属性定义了项目的缩小比例，默认为1，即如果空间不足，该项目将缩小。</p>
        <p>.item { flex-shrink:
            <number>; /* default 1 */ }
        </p>
    </div>
    <div class="box box-9">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item shrink">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
    </div>
    <div class="flex-basis">
        <h1>flex-basis</h1>
        <p>flex-basis属性定义了在分配多余空间之前，项目占据的主轴空间（main size）。浏览器根据这个属性，计算主轴是否有多余空间。它的默认值为auto，即项目的本来大小。</p>
        <p>.item { flex-basis:
            <length> | auto; /* default auto */ }
        </p>
    </div>
    <div class="box box-10">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item basis">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
    </div>

    <div class="flex">
        <h1>flex</h1>
        <p>flex属性是flex-grow, flex-shrink 和 flex-basis的简写，默认值为0 1 auto。后两个属性可选。</p>
        <p>.item { flex: none | [
            < 'flex-grow'>
                < 'flex-shrink'>? ||
                    < 'flex-basis'> ] }
        </p>
    </div>
    <div class="box box-11">
        <div class="item">A</div>
        <div class="item">B</div>
        <div class="item flex">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
    </div>

    <div class="align-self">
        <h1>align-self</h1>
        <p>align-self属性允许单个项目有与其他项目不一样的对齐方式，可覆盖align-items属性。默认值为auto，表示继承父元素的align-items属性，如果没有父元素，则等同于stretch。</p>
        <p>.item { align-self: auto | flex-start | flex-end | center | baseline | stretch; }
        </p>
    </div>

    <div class="box box-12">
        <div class="item start">A</div>
        <div class="item">B</div>
        <div class="item self">C</div>
        <div class="item">D</div>
        <div class="item">E</div>
    </div>
</body>

</html>