html - 溢出滚动已 overflow hidden

Question

我有一个 div 可滚动内容，其中是一个应该溢出其父级的标题。 好像overflow: scroll 给元素添加了overflow: hidden。
如果你能帮助我，我将不胜感激。谢谢!

HTML:

<div class="container">
    <div class="problem">This is hidden</div>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
</div>

<div class="container container-2">
    <div class="problem">This is what i want, but scrollable.</div>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
    <p>Content</p>
</div>

CSS:

.container {
    width: 230px;
    height: 200px;
    background-color: #eeeeee;
    overflow-y: scroll;
    margin-top: 30px;
    margin-left: 30px;
    float: left;
}

.container-2 {
    overflow-y: visible;
}

.problem {
    width: 235px;
    height: 30px;
    background-color: #33CCFF;
    margin-left: -20px;
    margin-top: 15px;
}

Answer 1

.problem {
    width: 235px;
    height: 30px;
    background-color: #33CCFF;
    /*margin-left: -20px;*/  //this is the cause of problem comment this
    margin-top: 15px;
}

Demo Fiddle