在flexbox中保持一个元素在两个不同宽度的元素之间居中

在flexbox中保持一个元素在两个不同宽度的元素之间居中

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问题描述

我正在制作一个音乐播放控制器,容器有 3 个部分:左、中和右.但是,由于左侧和右侧的宽度不同,中心部分不在 div 的真正中心,但我需要它.我正在使用 flexbox 的 space-between 选项来布局项目.

#container {显示:弹性;对齐内容:间隔;背景颜色:浅灰色;}#容器>div {高度:100px;边框:2px 红色虚线;/*这只是为了外观*/文本对齐:居中;填充:5px;}

<div>左侧</div><div>我想要这个居中</div><div>右侧(用于额外长度的额外文本)</div>

解决方案

您可以使用边距来近似居中.但是为了让 flexbox 在各种视口中保持一致的完美居中,你必须稍微修改你的 HTML.

您需要使用 display:inline-flex 声明将 #container 的直接子级变成 flex 容器,并给它们一个 flex 1justify-content: center 的值.

从那里,您将您的内容添加到子 div 中.要在左右 div 上对齐,请分别使用 margin-right: automargin-left: auto.

#container {显示:弹性;背景颜色:浅灰色;}.柔性 {弹性:1;显示:inline-flex;对齐内容:居中;}.flex >div {高度:100px;边框:2px 红色虚线;文本对齐:居中;填充:5px;}.left div {右边距:自动;}.right div {左边距:自动;}

<div class="left flex"><div>左侧</div>

<div class="center flex"><div>我想要这个居中</div>

<div class="right flex"><div>右侧(用于额外长度的额外文本)</div>

I am making a music playback controller, and the container has 3 sections: left, center, and right. However, since the left and right sides have different widths, the center section isn't in the true center of the div, but I need it to be. I am using flexbox's space-between option to layout the items.

#container {
    display: flex;
    justify-content: space-between;
    background-color: lightgrey;
}

#container > div {
  height: 100px;
  border: 2px dashed red;

  /*This is only for looks*/
  text-align: center;
  padding: 5px;
}
<div id="container">
  <div>Left Side</div>
  <div>I want this centered</div>
  <div>Right Side (Extra text for extra length)</div>
</div>

解决方案

You can use margins to approximate centering. But in order to get perfect centering with flexbox that's consistent across a variety of viewports, you'll have to slightly modify your HTML somewhat.

You need to turn the direct children of #container into flex containers themselves with a display:inline-flex declaration and give them a flex value of 1 and justify-content: center.

From there, you add your content into child divs. To get alignment on the left and right divs, use margin-right: auto and margin-left: auto, respectively.

#container {
  display: flex;
  background-color: lightgrey;
}
.flex {
  flex: 1;
  display: inline-flex;
  justify-content: center;
}
.flex > div {
  height: 100px;
  border: 2px dashed red;
  text-align: center;
  padding: 5px;
}
.left div {
  margin-right: auto;
}
.right div {
  margin-left: auto;
}
<div id="container">
  <div class="left flex">
    <div>Left Side</div>
  </div>
  <div class="center flex">
    <div>I want this centered</div>
  </div>
  <div class="right flex">
    <div>Right Side (Extra text for extra length)</div>
  </div>
</div>

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08-01 10:44