在flexbox中将一个元素保持在两个不同宽度元素之间的中心位置

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.

我正在制作音乐播放控制器,容器有3个部分:左,中,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 {
    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>

1 个解决方案

#1

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.

您可以使用边距来近似居中。但是为了在各种视口中保持一致的flexbox完美居中,你必须稍微修改一下你的HTML。

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.

您需要使用display:inline-flex声明将#container的直接子项转换为flex容器,并为它们赋予flex值1和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.

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

#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>

#1