html - 溢出滚动不起作用

Question

我有三个级别的 div。代码片段:jsfiddle.net:divs

<div class="div-container">
  <div class="second-level">
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
  </div>  
  <div class="second-level top-40">
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
  </div>
</div>

.div-container{
    padding: 5px;
    font-size: 20px;
    height: 30px;
    width: 576px;
    border: solid 2px #a6a29f;
}

.second-level{    
    height: 30px;
    font-size: 14px;
    position: absolute;
    width: auto;
    overflow: auto;
    box-sizing: border-box;
}

.divs {
    border: solid #ccc 1px;
    box-sizing: border-box;
    color: rgb(51, 51, 51);
    float: left;
    font-size: 14px;
    height: 20px;
    line-height: 20px;
    width: 50px;
}

div {
    display: block;
}

div-container 具有固定宽度，包含多个 second-level 容器。这些容器的宽度是动态的。它可以大于或小于 div-container 宽度。如果 second-level 的宽度大于 div-container 的 div，滚动条应该出现(没有父 div 的宽度超过)。尝试了很多不同的显示、位置和溢出设置，但没有成功。提前致谢!

附言简单地添加

overflow-x: scroll;
overflow-y: scroll;

to div-container 这样做: 我希望它就像我用红色画的一样。

Answer 1

这有帮助吗？下面的示例

.div-container{
    padding: 5px;
    font-size: 20px;
    height: 60px;
    width: 576px;
    border: solid 2px #a6a29f;
    position: relative;
    overflow-x: scroll;
    overflow-y: scroll;
}

.second-level{    
    height: 30px;
    font-size: 14px;
    position: absolute;
    box-sizing: border-box;
    display: flex;
}

.divs {
    border: solid #ccc 1px;
    box-sizing: border-box;
    color: rgb(51, 51, 51);
    font-size: 14px;
    height: 20px;
    line-height: 20px;
    width: 50px;
}

.top-40 {
    top:40px;
}

<div class="div-container">
  <div class="second-level">
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
  </div>  
  <div class="second-level top-40">
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
    <div class="divs">foo</div>
  </div>
</div>