CSS Flexbox 属性演示（超实用）

https://css-tricks.com/snippets/css/a-guide-to-flexbox/

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>CSS Flexbox 属性演示（超实用）</title> <style type="text/css"> /*flex-direction: row | row-reverse | column | column-reverse;*/ .flex-container.row { -webkit-flex-direction: row; -ms-flex-direction: row; flex-direction: row; } .flex-container.row-reverse { -webkit-flex-direction: row-reverse; -ms-flex-direction: row-reverse; flex-direction: row-reverse; } .flex-container.column { -webkit-flex-direction: column; -ms-flex-direction: column; flex-direction: column; } .flex-container.column-reverse { -webkit-flex-direction: column; -ms-flex-direction: column; flex-direction: column-reverse; } /*flex-wrap: nowrap | wrap | wrap-reverse;*/ .flex-container.nowrap { -webkit-flex-wrap: nowrap; -ms-flex-wrap: nowrap; flex-wrap: nowrap; } .flex-container.wrap { -webkit-flex-wrap: wrap; -ms-flex-wrap: wrap; flex-wrap: wrap; } .flex-container.wrap-reverse { -webkit-flex-wrap: wrap-reverse; -ms-flex-wrap: wrap-reverse; flex-wrap: wrap-reverse; } /*align-items: flex-start | flex-end | center | baseline | stretch;*/ .flex-container.align-items-start { -webkit-align-items: flex-start; -ms-flex-align: start; align-items: flex-start; } .flex-container.align-items-end { -webkit-align-items: flex-end; -ms-flex-align: end; align-items: flex-end; } .flex-container.align-items-center { -webkit-align-items: center; -ms-flex-align: center; align-items: center; } .flex-container.align-items-baseline { webkit-align-items: baseline; -ms-flex-align: baseline; align-items: baseline; } .flex-container.align-items-stretch { webkit-align-items: stretch; -ms-flex-align: stretch; align-items: stretch; } /*justify-content: flex-start | flex-end | center | space-between | space-around;*/ .flex-container.justify-start { -webkit-justify-content: flex-start; -ms-flex-pack: start; justify-content: flex-start; } .flex-container.justify-end { -webkit-justify-content: flex-end; -ms-flex-pack: end; justify-content: flex-end; } .flex-container.justify-center { -webkit-justify-content: center; -ms-flex-pack: center; justify-content: center; } .flex-container.justify-space-between { -webkit-justify-content: space-between; -ms-flex-pack: justify; justify-content: space-between; } .flex-container.justify-space-around { -webkit-justify-content: space-around; -ms-flex-pack: justify; justify-content: space-around; } /*align-content: flex-start | flex-end | center | space-between | space-around | stretch;*/ .flex-container.align-content-start { -webkit-align-content: flex-start; -ms-flex-line-pack: start; align-content: flex-start; } .flex-container.align-content-end { -webkit-align-content: flex-end; -ms-flex-line-pack: end; align-content: flex-end; } .flex-container.align-content-center { -webkit-align-content: center; -ms-flex-line-pack: center; align-content: center; } .flex-container.align-content-space-between { -webkit-align-content: space-between; -ms-flex-line-pack: justify; align-content: space-between; } .flex-container.align-content-space-around { -webkit-align-content: space-around; -ms-flex-line-pack: justify; /*distribute;*/ align-content: space-around; } .flex-container.align-content-stretch { -webkit-align-content: stretch; -ms-flex-line-pack: stretch; align-content: stretch; } /*align-self: auto | flex-start | flex-end | center | baseline | stretch;*/ .item.align-self-auto { -webkit-align-self: auto; -ms-flex-item-align: auto; align-self: auto; } .item.align-self-start { -webkit-align-self: flex-start; -ms-flex-item-align: start; align-self: flex-start; } .item.align-self-end { -webkit-align-self: flex-end; -ms-flex-item-align: end; align-self: flex-end; } .item.align-self-center { -webkit-align-self: center; -ms-flex-item-align: center; align-self: center; } .item.align-self-baseline { -webkit-align-self: baseline; -ms-flex-item-align: baseline; align-self: baseline; } .item.align-self-stretch { -webkit-align-self: stretch; -ms-flex-item-align: stretch; align-self: stretch; } .item.flex-grow1 { flex-grow: 1; } .item.flex-grow2 { flex-grow: 2; } .item.flex-grow3 { flex-grow: 3; } .item.flex-grow4 { flex-grow: 4; } html,body{ width:100%; min-height:100%; margin:0; padding:0; color:#ddd; font-size:14px; font-family:Verdana, Geneva, sans-serif;background-color:#333;} *{ box-sizing : border-box; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .principal{ width:calc(50% - 40px); min-width:525px; margin:0 20px 20px 20px; float:left;} .radio{ margin-bottom:20px;} label{ line-height:200%;} input[type=radio] { color:white; } input[type=radio]:checked + label { color:orange; } input[type=number]{ width:40px; margin-right:.5em;} h1{ font-size:200%;margin:20px;} h2{ font-size:180%;margin:0px;} h4 a{ font-variant:small-caps; font-size:120%; color:#ddd; text-decoration:none;} h4 small{font-variant: normal; font-size:80%; font-weight:normal; color:#57bcdb;} table{ width:100%; margin-bottom:1em;} table td{ width:50%; padding:3px;} .principal:last-of-type h4 small{ color:#ff8080;} .flex-container { border: 1px solid #555; display : -webkit-flex; display : -ms-flexbox; display : flex; padding:20px; width:100%; } .item{ margin:0; display : inherit; padding:10px; width:100px; height:100px; -webkit-align-items: center; -ms-flex-align:center; align-items: center; } .item p{width:100%; text-align:center; color:#fff;} #direction .item{flex-wrap:wrap;} /*#wrap .item{ height:auto;}*/ #wrap{ width:400px;} #align .item{height:auto; height:auto;flex-wrap:wrap;} #align{ height:300px;} #justify{ margin:20px 0; padding:20px 0;} #alignContent{flex-wrap:wrap; height:600px;} #alignContent .item{ height:auto;} #FCI1{ height:300px;} #FCI1 .item{ height:auto;} #FCI3 .item{ width:25%;} #FCI4 .item{ width:50%;} #FCI5 .item{ width:20%;} .nbsp{white-space: nowrap;} @media only screen and (max-width:1100px){.principal{ width:calc(100% - 40px);}} @media only screen and (max-width:580px) { .item{ width:50px;height:50px;} .principal{ width:calc(100% - 40px); min-width:initial;} .flex-container{width:100%; min-width:initial;} #wrap{ width:200px;} } </style> </head> <body> <div class="principal"> <h2>Properties for the flex container</h2> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-direction.php">flex-direction</a> <small>( property of the flex container )</small></h4> <div class="radio"> <input name="flex-direction" type="radio" class="flex-direction" id="R11" value="row" checked><label for="R11">row:</label> <input name="flex-direction" type="radio" class="flex-direction" id="R12" value="row-reverse"><label for="R12">row-reverse:</label> <input name="flex-direction" type="radio" class="flex-direction" id="R13" value="column"><label for="R13">column:</label> <input name="flex-direction" type="radio" class="flex-direction" id="R14" value="column-reverse"><label for="R14">column-reverse:</label> </div></div> <div class="flex-container" id="direction"> <div class="item" data-color="2a80b9"><p>1</p></div> <div class="item" data-color="8f44ad"><p>2</p></div> <div class="item" data-color="16a086"><p>3</p></div> <div class="item" data-color="f1c40f"><p>4</p></div> <div class="item" data-color="e77e23"><p>5</p></div> </div> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-wrap.php">flex-wrap</a> <small>( property of the flex container )</small></h4> <div class="radio"> <input name="flex-wrap" type="radio" class="flex-wrap" id="R21" value="nowrap" checked><label for="R21">nowrap:</label> <input name="flex-wrap" type="radio" class="flex-wrap" id="R22" value="wrap"><label for="R22">wrap:</label> <input name="flex-wrap" type="radio" class="flex-wrap" id="R23" value="wrap-reverse"><label for="R23">wrap-reverse:</label> </div></div> <div class="flex-container" id="wrap"> <div class="item" data-color="2a80b9"><p>1</p></div> <div class="item" data-color="8f44ad"><p>2</p></div> <div class="item" data-color="16a086"><p>3</p></div> <div class="item" data-color="f1c40f"><p>4</p></div> <div class="item" data-color="e77e23"><p>5</p></div> </div> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-align-items.php">align-items</a> <small>( property of the flex container )</small></h4> <div class="radio"> <input name="flex-align-items" type="radio" class="flex-align-items" id="R31" value="align-items-start" ><label for="R31">flex-start:</label> <input name="flex-align-items" type="radio" class="flex-align-items" id="R32" value="align-items-end"><label for="R32">flex-end:</label> <input name="flex-align-items" type="radio" class="flex-align-items" id="R33" value="align-items-center"><label for="R33">center:</label> <input name="flex-align-items" type="radio" class="flex-align-items" id="R34" value="align-items-baseline"><label for="R34">baseline:</label> <input name="flex-align-items" type="radio" class="flex-align-items" id="R35" value="align-items-stretch" checked><label for="R35">stretch:</label> </div></div> <div class="flex-container" id="align"> <div class="item" data-color="2a80b9"><p>1</p></div> <div class="item" data-color="8f44ad"><p>2</p></div> <div class="item" data-color="16a086"><p style="font-size:50px;">3</p></div> <div class="item" data-color="f1c40f"><p>4</p></div> <div class="item" data-color="e77e23"><p>5</p></div> </div> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-justify-content.php">justify-content</a> <small>( property of the flex container )</small></h4>  <div class="radio"> <input name="justify-content" type="radio" class="justify-content" id="R41" value="justify-start" checked ><label for="R41">flex-start:</label> <input name="justify-content" type="radio" class="justify-content" id="R42" value="justify-end" ><label for="R42">flex-end:</label> <input name="justify-content" type="radio" class="justify-content" id="R43" value="justify-space-between" ><label for="R43">space-between:</label> <input name="justify-content" type="radio" class="justify-content" id="R44" value="justify-center" ><label for="R44">center:</label> <input name="justify-content" type="radio" class="justify-content" id="R45" value="justify-space-around" ><label for="R45">space-around:</label> </div></div> <div class="flex-container" id="justify"> <div class="item" data-color="2a80b9"><p>1</p></div> <div class="item" data-color="8f44ad"><p>2</p></div> <div class="item" data-color="16a086"><p>3</p></div> <div class="item" data-color="f1c40f"><p>4</p></div> <div class="item" data-color="e77e23"><p>5</p></div> </div>  <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-align-content.php">align-content</a> <small>( property of the flex container )</small></h4>  <div class="radio"> <input name="align-content" type="radio" class="align-content" id="R51" value="align-content-start" ><label for="R51">flex-start:</label> <input name="align-content" type="radio" class="align-content" id="R52" value="align-content-end" ><label for="R52">flex-end:</label> <input name="align-content" type="radio" class="align-content" id="R53" value="align-content-center" ><label for="R53">center:</label> <input name="align-content" type="radio" class="align-content" id="R54" value="align-content-space-between" ><label for="R54">space-between:</label> <input name="align-content" type="radio" class="align-content" id="R55" value="align-content-space-around" ><label for="R55">space-around:</label> <input name="align-content" type="radio" class="align-content" id="R56" value="align-content-stretch" checked><label for="R56">stretch:</label> </div></div> <div class="flex-container" id="alignContent"> <div class="item" data-color="1bbc9d"><p>1</p></div> <div class="item" data-color="2fcc71"><p>2</p></div> <div class="item" data-color="3598dc"><p>3</p></div> <div class="item" data-color="9c59b8"><p>4</p></div> <div class="item" data-color="34495e"><p>5</p></div> <div class="item" data-color="16a086"><p>6</p></div> <div class="item" data-color="27ae61"><p>7</p></div> <div class="item" data-color="2a80b9"><p>8</p></div> <div class="item" data-color="8f44ad"><p>9</p></div> <div class="item" data-color="2d3e50"><p>10</p></div> <div class="item" data-color="f1c40f"><p>11</p></div> <div class="item" data-color="e77e23"><p>12</p></div> <div class="item" data-color="e84c3d"><p>13</p></div> <div class="item" data-color="ecf0f1"><p>14</p></div> <div class="item" data-color="96a6a6"><p>15</p></div> <div class="item" data-color="f49c14"><p>16</p></div> <div class="item" data-color="d55401"><p>17</p></div> <div class="item" data-color="c1392b"><p>18</p></div> <div class="item" data-color="bec3c7"><p>19</p></div> <div class="item" data-color="808b8d"><p>20</p></div> </div> </div>  <div class="principal"> <h2>Properties for the flex items </h2> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-align-self.php">align-self</a> <small>( property for flex items )</small></h4>  <div class="radio"> <input name="align-self" type="radio" class="align-self" id="R61" value="align-self-auto" checked ><label for="R61">auto:</label> <input name="align-self" type="radio" class="align-self" id="R62" value="align-self-start" ><label for="R62">flex-start:</label> <input name="align-self" type="radio" class="align-self" id="R63" value="align-self-end" ><label for="R63">flex-end:</label> <input name="align-self" type="radio" class="align-self" id="R64" value="align-self-center" ><label for="R64">center:</label> <input name="align-self" type="radio" class="align-self" id="R65" value="align-self-baseline" ><label for="R65">baseline:</label> <input name="align-self" type="radio" class="align-self" id="R66" value="align-self-stretch"><label for="R66">stretch:</label> </div> </div> <div class="flex-container align-items-center" id="FCI1"> <div class="item" data-color="f49c14"><p>1</p></div> <div class="item" data-color="d55401"><p>2</p></div> <div class="item" data-color="c1392b" id="alignSelf"><p style="font-size:50px;">3</p></div> <div class="item" data-color="bec3c7"><p>4</p></div> <div class="item" data-color="808b8d"><p>5</p></div> </div> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-abreviado.php#flexGrow">flex-grow</a> <small>( property for flex items )</small></h4>  <div class="radio"> <span class="nbsp"><label for="R71">elemento 1: </label><input type="number" class="flex-grow" id="R71" min="0" ></span> <span class="nbsp"><label for="R72">elemento 2: </label><input type="number" class="flex-grow" id="R72" min="0" ></span> <span class="nbsp"><label for="R73">elemento 3: </label><input type="number" class="flex-grow" id="R73" min="0" ></span> <span class="nbsp"><label for="R74">elemento 4: </label><input type="number" class="flex-grow" id="R74" min="0" ></span> <span class="nbsp"><label for="R75">elemento 5: </label><input type="number" class="flex-grow" id="R75" min="0" ></span> </div> </div> <div class="flex-container align-items-center" id="FCI2"> <div class="item" id="itemR71" data-color="f49c14"><p>1</p></div> <div class="item" id="itemR72" data-color="d55401"><p>2</p></div> <div class="item" id="itemR73" data-color="c1392b"><p>3</p></div> <div class="item" id="itemR74" data-color="bec3c7"><p>4</p></div> <div class="item" id="itemR75" data-color="808b8d"><p>5</p></div> </div> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-abreviado.php#flexShrink">flex-shrink</a> <small>( property for flex items )</small></h4>  <div class="radio"> <span class="nbsp"><label for="R81">elemento 1: </label><input type="number" class="flex-shrink" id="R81" min="0" ></span> <span class="nbsp"><label for="R82">elemento 2: </label><input type="number" class="flex-shrink" id="R82" min="0" ></span> <span class="nbsp"><label for="R83">elemento 3: </label><input type="number" class="flex-shrink" id="R83" min="0" ></span> <span class="nbsp"><label for="R84">elemento 4: </label><input type="number" class="flex-shrink" id="R84" min="0" ></span> <span class="nbsp"><label for="R85">elemento 5: </label><input type="number" class="flex-shrink" id="R85" min="0" ></span> </div> </div> <div class="flex-container align-items-center" id="FCI3"> <div class="item" id="itemR81" data-color="f49c14"><p>1</p></div> <div class="item" id="itemR82" data-color="d55401"><p>2</p></div> <div class="item" id="itemR83" data-color="c1392b"><p>3</p></div> <div class="item" id="itemR84" data-color="bec3c7"><p>4</p></div> <div class="item" id="itemR85" data-color="808b8d"><p>5</p></div> </div> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-abreviado.php">flex</a> <small>( property for flex items )</small></h4>  <p>.item { flex: flex-grow [flex-shrink] [flex-basis]; } </p> <table id="flexBasis"> <tr><td>elemento 1</td><td>elemento 2</td></tr> <tr><td><input type="number" class="flex-basis" id="B1" min="0" value="50" ><label for="B1">flex-basis %</label></td><td><input type="number" class="flex-basis" id="B2" min="0" value="50" ><label for="B2">flex-basis %</label></td></tr> <tr><td><input type="number" class="flex-basis-grow" id="G1" min="0" value="0" ><label for="G1">flex-grow</label></td><td><input type="number" class="flex-basis-grow" id="G2" min="0" value="0" ><label for="G2">flex-grow</label></td></tr> <tr><td><input type="number" class="flex-basis-shrink" id="S1" min="0" value="0" ><label for="S1">flex-shrink</label></td><td><input type="number" class="flex-basis-shrink" id="S2" min="0" value="0" ><label for="S2">flex-shrink</label></td></tr> </table> </div> <div class="flex-container align-items-center" id="FCI4"> <div class="item" id="item1" data-color="f49c14"><p>1</p></div> <div class="item" id="item2" data-color="d55401"><p>2</p></div> </div> <div class="control"> <h4><a href="http://w3.unpocodetodo.info/css3/flex-order.php">order</a> <small>( property for flex items )</small></h4>  <div class="radio"> <span class="nbsp"><label for="R91">elemento 1: </label><input type="number" class="flex-order" id="R91" min="0" ></span> <span class="nbsp"><label for="R92">elemento 2: </label><input type="number" class="flex-order" id="R92" min="0" ></span> <span class="nbsp"><label for="R93">elemento 3: </label><input type="number" class="flex-order" id="R93" min="0" ></span> <span class="nbsp"><label for="R94">elemento 4: </label><input type="number" class="flex-order" id="R94" min="0" ></span> <span class="nbsp"><label for="R95">elemento 5: </label><input type="number" class="flex-order" id="R95" min="0" ></span> </div> </div> <div class="flex-container align-items-center" id="FCI5"> <div class="item" id="orderR91" data-color="f49c14"><p>1</p></div> <div class="item" id="orderR92" data-color="d55401"><p>2</p></div> <div class="item" id="orderR93" data-color="c1392b"><p>3</p></div> <div class="item" id="orderR94" data-color="bec3c7"><p>4</p></div> <div class="item" id="orderR95" data-color="808b8d"><p>5</p></div> </div> </div> </body>  <script type="text/javascript"> function changeFlex(e, t) { for (var n = document.querySelectorAll("." + e), l = document.querySelector("#" + t), r = 0; r < n.length; r++) n[r].addEventListener("change", function() { var e = this.value; l.setAttribute("class", "flex-container " + e) }, !1) } function changeItemFlex(e, t) { for (var n = document.querySelectorAll("." + e), l = document.querySelector("#" + t), r = 0; r < n.length; r++) n[r].addEventListener("change", function() { var e = this.value; l.setAttribute("class", "item " + e) }, !1) } function changeFlexBasis(e, t) { var n = isNaN(e.value) ? 0 : e.value; console.log("B: " + n), document.querySelector("#" + t).style.WebkitFlexBasis = n + "%", document.querySelector("#" + t).style.flexBasis = n + "%" } function changeFlexGrow(e, t) { var n = isNaN(e.value) ? 0 : e.value; console.log("G: " + n), document.querySelector("#" + t).style.WebkitFlexGrow = n, document.querySelector("#" + t).style.flexGrow = n } function changeFlexShrink(e, t) { var n = isNaN(e.value) ? 0 : e.value; console.log("S: " + n), document.querySelector("#" + t).style.WebkitFlexShrink = n, document.querySelector("#" + t).style.flexShrink = n } function changeFlexOrder(e, t) { var n = isNaN(e.value) ? 0 : e.value; console.log("O: " + n), document.querySelector("#" + t).style.WebkitOrder = n, document.querySelector("#" + t).style.order = n } function changeAll(e, t, n, l) { changeFlexBasis(e, l), changeFlexGrow(t, l), changeFlexShrink(n, l) } for (var items = document.querySelectorAll(".item"), i = 0; i < items.length; i++) if (items[i].hasAttribute("data-color")) { var color = items[i].getAttribute("data-color"); items[i].style.backgroundColor = "#" + color } for (var flexO = document.querySelectorAll(".flex-order"), o = 0; o < flexO.length; o++) flexO[o].addEventListener("change", function() { changeFlexOrder(this, "order" + this.id) }, !1); changeFlex("flex-direction", "direction"), changeFlex("flex-wrap", "wrap"), changeFlex("flex-align-items", "align"), changeFlex("justify-content", "justify"), changeFlex("align-content", "alignContent"), changeItemFlex("align-self", "alignSelf"); for (var flexGrow = document.querySelectorAll(".flex-grow"), i = 0; i < flexGrow.length; i++) flexGrow[i].addEventListener("change", function() { var e = "item" + this.id; changeFlexGrow(this, e) }); for (var flexShrink = document.querySelectorAll(".flex-shrink"), j = 0; j < flexShrink.length; j++) flexShrink[j].addEventListener("change", function() { var e = "item" + this.id; changeFlexShrink(this, e) }); var B1 = document.querySelector("#B1"), G1 = document.querySelector("#G1"), S1 = document.querySelector("#S1"), B2 = document.querySelector("#B2"), G2 = document.querySelector("#G2"), S2 = document.querySelector("#S2"); B1.addEventListener("change", function() { changeAll(B1, G1, S1, "item1") }), G1.addEventListener("change", function() { changeAll(B1, G1, S1, "item1") }), S1.addEventListener("change", function() { changeAll(B1, G1, S1, "item1") }), B2.addEventListener("change", function() { changeAll(B2, G2, S2, "item2") }), G2.addEventListener("change", function() { changeAll(B2, G2, S2, "item2") }), S2.addEventListener("change", function() { changeAll(B2, G2, S2, "item2") }); </script> </html>

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