使用 ::before & ::after 伪元素将元素从左向右移动答案

【问题标题】：Using ::before & ::after pseduo elements to move element from left to right使用 ::before & ::after 伪元素将元素从左向右移动
【发布时间】：2021-12-27 11:49:38
【问题描述】：

在 CSS 中使用 ::before 和 ::after 相当新。到目前为止，这是我所拥有的：

我有StyledLabel 上的之前和之后创建的复选框 - 我基本上只是想交换复选框和标签的顺序，以便复选框位于标签之后（右侧） ?

.wrapper {
  display: inline-flex;
  min-height: 1.5rem;
  padding-left: 1.5rem;
  margin-right: 1 rem;
}

.label {
  position: relative;
  margin-bottom: 0;
 }


 .label:before {
    position: absolute;
    top: 4px;
    left: -24px;
    display: block;
    width: 20px;
    height: 20px;
    pointer-events: none;
    content: "";
    background-color: red;
  }
  
 .label:after {
    position: absolute;
    top: 4px;
    left: -24px;
    display: block;
    width: 40px;
    height: 40px;
    content: "";
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 50% 50%;
  }
}

<div class="wrapper">
  <label class="label">
    <div class="label-wrapper">In progress</div>
  </label>
</div>

【问题讨论】：

标签： css css-selectors styled-components pseudo-element

【解决方案1】：

我在 css 中添加了 cmets 以显示您需要更改的内容。

.wrapper {
    display: inline-flex;
    min-height: 1.5rem;
    /*padding-left: 1.5rem;*/ /* change this */
    padding-right: 1.5rem; /* to this */
    
    /*margin-right: 1rem;*/ /* change this */
    margin-left: 1rem; /* to this or remove of you will */
}

.label {
    position: relative;
    margin-bottom: 0;
}

.label:before {
    content: '';
    position: absolute;
    top: 4px;
    /*left: -24px;*/ /* change this */
    right: -24px; /* to this */
    display: block;
    width: 20px;
    height: 20px;
    pointer-events: none;
    background-color: #fff;
    border: 1px solid black; /* added just to show where this element is */
}

.label:after {
    content: '';
    position: absolute;
    top: 4px;
    /*left: -24px;*/ /* change this */
    right: -24px; /* to this */
    display: block;
    width: 40px;
    height: 40px;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 50% 50%;
}

<div class="wrapper">
    <label class="label">
        <span class="label-wrapper">In progress</span>
    </label>
</div>

【讨论】：

【解决方案2】：

这里不需要使用定位，只需要flexbox和row-reverse

.wrapper {
  display: inline-flex;
  align-items: center;
  min-height: 1.5rem;
  padding-left: 4px;
  margin-right: 1rem;
  border:1px solid grey;
}

.label {
  display: flex;
  flex-direction:row-reverse;
  position: relative;
  margin-bottom: 0;
}
.label:before {
    display: block;
    width: 20px;
    height: 20px;
    pointer-events: none;
    content: "";
    background-color: red;
    margin:0  4px;

  }

<div class="wrapper">
  <label class="label">
    <div class="label-wrapper">In progress</div>
  </label>
</div>

【讨论】：