最近抽时间阅读了阮一峰大神的《flex布局教程》，初窥门径，小有心得，不过还不是很不熟练，需要多多使用才能熟练掌握。依据实例篇的一些讲解，自己也尝试实现了骰子的布局。这里跟大家分享一下代码和笔记，觉得参照这个代码来初步理解flex布局还是很好的。
<!DOCTYPE html>
<html lang="en">
<head>
<title>flex布局</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- <link href="css/style.css" rel="stylesheet"> -->
<style>
.container {
background: #000;
height: 600px;
width: 800px;
display: flex;
flex-wrap: wrap;
align-content: space-around;
justify-content: space-around;
/* padding: 20px; */
}
.box {
display: flex;
background: #fff;
width: 200px;
height: 200px;
border-radius: 10%;
padding: 10px;
/* margin: 20px; */
}
.item {
background: #000;
color: #fff;
text-align: center;
line-height: 60px;
border-radius: 50%;
width: 60px;
height: 60px;
}
.column{
/* 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） */
/* flex-basis: <length> | auto; */
flex-basis: 100%;
display: flex;
}
/* 1 */
.box:nth-child(1) {
/* 横向：左边|中间|右边 */
/* justify-content: flex-start|center|flex-end; */
/* 纵向：上边|中间|下边 */
/* align-items: flex-start|center|flex-end; */
justify-content: center;
align-items: center;
}
/* 2 */
.box:nth-child(2) {
/* 排列间隔：两端对齐|每个项目两侧的间隔相等 */
/* justify-content: space-between|space-around; */
justify-content: space-between;
}
.box:nth-child(2) .item:nth-child(2) {
/* 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 */
/* align-self: auto | flex-start | flex-end | center; */
align-self: flex-end;
}
/* 3 */
.box:nth-child(3) {
justify-content: space-between;
}
.box:nth-child(3) .item:nth-child(2) {
align-self: center;
}
.box:nth-child(3) .item:nth-child(3) {
align-self: flex-end;
}
/* 4 */
.box:nth-child(4) {
/* 属性定义，如果一条轴线排不下，如何换行 */
/* flex-wrap: no-wrap|wrap|wrap-reverse; */
/* 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 */
/* align-content: flex-start | flex-end | center | space-between | space-around | stretch; */
flex-wrap: wrap;
align-content: space-between;
}
.box:nth-child(4) .column {
justify-content: space-between;
}
/* 5 */
.box:nth-child(5) {
flex-wrap: wrap;
align-content: space-between;
}
.box:nth-child(5) .column{
justify-content: space-between;
}
.box:nth-child(5) .column:nth-child(2){
justify-content: center;
}
/* 6 */
.box:nth-child(6) {
/* 排列方向 */
/* flex-direction: row|row-reverse|column|column-reverse; */
flex-wrap: wrap;
flex-direction: column;
align-content: space-between;
justify-content: space-between;
}
</style>
</head>
<body>
<div class="container">
<!-- 1 -->
<div class="box">
<span class="item">1</span>
</div>
<!-- 2 -->
<div class="box">
<span class="item">1</span>
<span class="item">2</span>
</div>
<!-- 3 -->
<div class="box">
<span class="item">1</span>
<span class="item">2</span>
<span class="item">3</span>
</div>
<!-- 4 -->
<div class="box">
<div class="column">
<span class="item">1</span>
<span class="item">2</span>
</div>
<div class="column">
<span class="item">3</span>
<span class="item">4</span>
</div>
</div>
<!-- 5 -->
<div class="box">
<div class="column">
<span class="item">1</span>
<span class="item">2</span>
</div>
<div class="column">
<span class="item">3</span>
</div>
<div class="column">
<span class="item">4</span>
<span class="item">5</span>
</div>
</div>
<!-- 6 -->
<div class="box">
<span class="item">1</span>
<span class="item">2</span>
<span class="item">3</span>
<span class="item">4</span>
<span class="item">5</span>
<span class="item">6</span>
</div>
</div>
</body>
</html>
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