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Detailed explanation of CSS double flying wing layout

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Mar 21, 2018 pm 01:28 PM

cssDetailed explanation

This time I will bring you a detailed explanation of the CSS double-flying wing layout. What are the precautions for implementing the CSS double-flying wing layout? The following is a practical case, let’s take a look.

Double flying wing layout is a three-column layout with fixed width and height at both ends and adaptive middle one.

Let’s take a picture first. The gray blocks on the left and right have fixed width and height. The green area in the middle is width and height adaptive

Method 1: Implemented through flex elastic layout

Look at the code

//HTML结构，p2是中间的自适应区域
...
<body>
    <p class="wrap">
        <p class="p1"></p>  
        <p class="p2"></p>
        <p class="p3"></p>
    </p>
</body>
...

*{  //先简单粗暴的解决一下浏览器的默认样式  
    margin: 0;
    padding: 0;
    border: 0;
    box-sizing:border-box;   //使用border-box，盒模型好计算，妈妈再也不用担心我算不清块宽高了
}
.wrap{
    width: 100%;
    height: 100%;
    display: flex;     //使用弹性布局
    flex-flow:row nowrap;  //以沿主轴方向行显示，不换行，从而来显示3个块
    justify-content:space-around;  //这一个加和不叫其实也没事，加上去的意思就是两端对齐
}

[class^=&#39;p&#39;]{  // 给所有的p都加上高和边框样式，方便观看，不然都缩成一条线了
    height: 400px;
    border: 1px solid #f00;
}

.p1,.p3{  //给两端的p固定的宽
    width: 200px;
    background-color: #ccc;
    flex-shrink: 1; //默认是1，所以不用写也没事，写出来自是表达这个意思
}
.p2{
    background-color: #0f0;
    flex-grow:1;  //这个比较重要，作用是让第二个块的宽度撑满剩余的空间
}

Method 2: Achieve through positioning

HTML structure remains unchanged, look at the style

.wrap{
    width: 100%;  //同样实现宽高100%铺开
    height: 100%;
    position: relative;  //父层添加相对定位，让子元素相对父层来定位
}
[class^=&#39;p&#39;]{
    height: 400px;
    border: 1px solid #f00;
}
.p1,.p3{
    position: absolute;
    width: 200px;
    background-color: #ccc;
}
.p1{
    left: 0;  //固定在父层的左侧
    top: 0;
}
.p3{
    right: 0;  //固定在父层的右侧
    top: 0;
}
.p2{
    background-color: #0f0;
    /*这个是关键，我们没有给中间的p2添加过宽属性，所以默认占用父层宽的100%，
     由于两侧块宽是固定的，所以中间的自适应块左右分别200px的外边距中间的content区域就会实现自适应*/
    margin: 0 200px;  
}

Effect

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related matters on the php Chinese website article!
Recommended reading:

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