Flexbox-第一栏全高

Question

如何使第一个.item（绿色框）的高度为100％？

* {
box-sizing: border-box;
}
.wrap {
display: flex;
flex-wrap: wrap;
}
.item {
border: 1px solid red;
background: #8282e0;
width: 50%;
}
.item:nth-child(1) {
background: #a6f7a6;
height: 100%;
}
.item:nth-child(3) {
margin-left: 50%;
}

<div class="wrap">
  <div class="item">
<h3>Item Title</h3>
  </div>
  <div class="item">
<h3>Item Title</h3>
  </div>
  <div class="item">
<h3>Item Title</h3>
  </div>
</div>

Codepen-https://codepen.io/afelixj/pen/eavVJw

Answer 1

这就是我要这样做的方式（如果您需要将三个标头完全放在下面，例如使用for循环呈现它们，我不知道一种使其工作的方法）

* {
  box-sizing: border-box;
}

.wrap {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  flex: 1;
}

.itemCont {
  display: flex;
  background: #8282e0;
  flex: 1;
  flex-direction: column;
}

.item {
  display: flex;
  border: 1px solid red;
  background: #5691f3;
  flex: 1;
}

<div class="wrap">
  <div class="itemCont">
    <div class="item">
      <h3>Item Title</h3>
    </div>
  </div>
  <div class="itemCont">
    <div class="item">
      <h3>Item Title</h3>
    </div>
    <div class="item">
      <h3>Item Title</h3>
    </div>
  </div>
</div>

Answer 2

这可以通过将flex-direction更改为column并将固定高度应用于.wrap

来实现。

* {
    box-sizing: border-box;
}
.wrap {
    display: flex;
    flex-wrap: wrap;
    flex-direction: column;
    height: 123px;
}
.item {
    border: 1px solid red;
    background: #8282e0;
    width: 50%;
}
.item:nth-child(1) {
    background: #a6f7a6;
    height: 100%;
}

<div class="wrap">
  <div class="item">
<h3>Item Title</h3>
  </div>
  <div class="item">
<h3>Item Title</h3>
  </div>
  <div class="item">
<h3>Item Title</h3>
  </div>
</div>

Answer 3

* {
  box-sizing: border-box;
}

.wrap {
  display: flex;
  flex-wrap: wrap;
}

.item {
  border: 1px solid red;
  background: #8282e0;
  flex:1;
}

.item-inner {
  flex: 1;
  justify-content:center;
  height:100px;
}
.wrap-inner{
  display: flex;
  flex-wrap: wrap;
  flex-direction:column;
}
.item:nth-child(1) {
  background: #a6f7a6;
  height: 200px;
}

.item:nth-child(3) {
  margin-left: 50%;
}

<div class="wrap">
  <div class="item item-outer">
    <h3>Item Title</h3>
  </div>
  <div class="item wrap-inner">
    <div class="item-inner">
      <h3>Item Title</h3>
    </div>
    <div class="item-inner">
      <h3>Item Title</h3>
    </div>
  </div>
</div>

这很容易使用flex属性并更改高度。

Answer 4

不需要多余的CSS，只需更改结构并根据需要提供背景颜色即可。

* {
box-sizing: border-box;
}
.wrap {
display: flex;
flex-wrap: wrap;
}
.item {
border: 1px solid red;background: #8282e0;
}
.wrap > .item{width: 50%;}

<div class="wrap">
  <div class="item">
    <h3>Item Title</h3>
  </div>
  <div class="item">
  <div class="item">
    <h3>Item Title</h3>
  </div>
  <div class="item">
    <h3>Item Title</h3>
  </div>
  </div>
</div>