html+css布局的问题（定位项目）

Question

我有这个代码：

我的小提琴：https://jsfiddle.net/v5j3L6e9/

基本上，我有 6 个盒子（带有图像和文本的 Div）。

我试图将“底部区域”居中（例如，这可以是液体布局，顶部区域作为标题，然后是主要内容，具有最大宽度）

这个想法是“bottomzone”具有固定的最大宽度，因此当分辨率较大时，它应该保持居中（同时“topzone”将随着分辨率宽度而扩展）。

我不明白如何在不破坏盒子定位的情况下使底部区域居中（盒子必须保持分布并保持居中）。

另外，不确定我是否做了一个好的元素层次结构（在 html+css 上相当新）。

谢谢。

.topzone {

  height: 100px;

  background-color: blue;

}

.topzone h1 {

  text-align: center;

}

.bottomzone {

  margin-top: 50px;

  max-width: 800px;

  text-align: center;

  display: flex;

  justify-content: center;

  flex-wrap: wrap;

}

.bottomzone div {

  position: relative;

  width: 30%;

  margin: 0px 10px 0px 10px;

}

.bottomzone img {

  width: 100%;

}

.bottomzone div h3 {

  position: absolute;

  top: 20px;

  width: 100%;

}

<div class="topzone">

  <h1>Title 1</h1>

  <h2>Title 2</h2>

</div>

<div class="bottomzone">

  <div>

    <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">

    <h3>Box 1</h3>

  </div>

  <div>

    <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">

    <h3>Box 2</h3>

  </div>

  <div>

    <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">

    <h3>Box 3</h3>

  </div>

  <div>

    <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">

    <h3>Box 4</h3>

  </div>

  <div>

    <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">

    <h3>Box 5</h3>

  </div>

  <div>

    <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">

    <h3>Box 6</h3>

  </div>

</div>

Answer 1

如果您想使用弹性盒，您可以简单地使用包装元素centering-wrapper并设置align-items: center和flex-direction: column使项目水平居中。.centering-wrapper {&nbsp; display: flex;&nbsp; flex-direction: column;&nbsp; align-items: center;}.topzone {&nbsp; height: 100px;&nbsp; background-color: blue;}.topzone h1 {&nbsp; text-align: center;}.bottomzone {&nbsp; margin-top: 50px;&nbsp; max-width: 800px;&nbsp; text-align: center;&nbsp; display: flex;&nbsp; justify-content: center;&nbsp; flex-wrap: wrap;}.bottomzone div {&nbsp; position: relative;&nbsp; width: 30%;&nbsp; margin: 0px 10px 0px 10px;}.bottomzone img {&nbsp; width: 100%;}.bottomzone div h3 {&nbsp; position: absolute;&nbsp; top: 20px;&nbsp; width: 100%;}<div class="topzone">&nbsp; <h1>Title 1</h1>&nbsp; <h2>Title 2</h2></div><div class="centering-wrapper">&nbsp; <div class="bottomzone">&nbsp; &nbsp; <div>&nbsp; &nbsp; &nbsp; <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">&nbsp; &nbsp; &nbsp; <h3>Box 1</h3>&nbsp; &nbsp; </div>&nbsp; &nbsp; <div>&nbsp; &nbsp; &nbsp; <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">&nbsp; &nbsp; &nbsp; <h3>Box 2</h3>&nbsp; &nbsp; </div>&nbsp; &nbsp; <div>&nbsp; &nbsp; &nbsp; <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">&nbsp; &nbsp; &nbsp; <h3>Box 3</h3>&nbsp; &nbsp; </div>&nbsp; &nbsp; <div>&nbsp; &nbsp; &nbsp; <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">&nbsp; &nbsp; &nbsp; <h3>Box 4</h3>&nbsp; &nbsp; </div>&nbsp; &nbsp; <div>&nbsp; &nbsp; &nbsp; <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">&nbsp; &nbsp; &nbsp; <h3>Box 5</h3>&nbsp; &nbsp; </div>&nbsp; &nbsp; <div>&nbsp; &nbsp; &nbsp; <img src="https://etc.usf.edu/clipart/21900/21988/square_21988_md.gif" alt="Just a box">&nbsp; &nbsp; &nbsp; <h3>Box 6</h3>&nbsp; &nbsp; </div>&nbsp; </div></div>

Answer 2

将这些 CSS 规则添加到.bottomzone选择器：margin-left: auto;margin-right: auto;这可确保浏览器计算出相同的左右边距空间量。由于您在代码中使用margin-top，因此可以像这样简化它：.bottomzone {&nbsp; margin: 50px auto 0;&nbsp; ...}其中 0 表示下边距。