html - 使绝对定位元素向左扩展

Question

我想显示包含元素之外的元素列表。

目前看起来像这样，如果只有一个元素(第 2 行)就可以了。但是当我有多个元素时，它们应该向左移动而不是向右移动。

下图就是我想要的:

顺序并不那么重要。重要的是它们应该向左扩展，而不是向右扩展。数字 (1,2,3,4) 永远不应放在“表格”上方。可以有 X 个“ float 元素”，我不想对其进行硬编码。以下是包含所有相关 HTML 的片段。

ul.items.table-style > li {
    padding: 2px 5px 4px 5px;
    border: 1px solid #dddddd;
    margin-top: 0;
}

ul.items.table-style {
    margin-bottom: 20px;
}
ul.items {
    list-style: none;
    margin-left: 0;
    padding-left: 0;
}

ul.items.table-style > li ul.left-outside {
    position: absolute;
    margin-left: -20px;
    background-color: blue;
    list-style-type: none;
    padding: 0;
}
ul.items.table-style > li ul.left-outside li {
    display:inline-block;
    width: 10px;
    background-color:grey;
    color:yellow;
}

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<div class="container">
  <div class="row">
    <div class="col-sm-6 col-sm-offset-3"> <!-- Added just to shrink the list in this example -->
    <ul class="items table-style">
    <li class="row">
      <ul class="left-outside">
        <li>1</li>
        <li>2</li>
      </ul>
      <div class="col-xs-4">Col 1</div>
      <div class="col-xs-4">Col 2</div>
      <div class="col-xs-4">Col 3</div>
    </li>
    <li class="row">  
      <ul class="left-outside">
        <li>1</li>
      </ul>
      <div class="col-xs-4">Col 1</div>
      <div class="col-xs-4">Col 2</div>
      <div class="col-xs-4">Col 3</div>
    </li>
    <li class="row">
      <ul class="left-outside">
        <li>1</li>
        <li>2</li>
        <li>3</li>
      </ul>
      <div class="col-xs-4">Col 1</div>
      <div class="col-xs-4">Col 2</div>
      <div class="col-xs-4">Col 3</div>
    </li>
    <li class="row">  
      <ul class="left-outside">
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
      </ul>
      <div class="col-xs-4">Col 1</div>
      <div class="col-xs-4">Col 2</div>
      <div class="col-xs-4">Col 3</div>
    </li>
  </ul>
    </div>
  </div>
  
  
</div>

Answer 1

您可以将 transform: translateX 添加到您的 .left-outside 类中

ul.items.table-style > li ul.left-outside {
    position: absolute;
    margin-left: -20px;
    background-color: blue;
    list-style-type: none;
    padding: 0;
    transform: translateX(-100%);
}
ul.items.table-style > li ul.left-outside li {
   display:inline-block;
   width: 10px;
   background-color:grey;
   color:yellow;
   transform: translateX(-100%);
}

fiddle