中心DIV含量流體垂直和水平

Question

這是我的示例：

線高不適用於流體div。 我目前使用的代碼基於行高，但是框的大小會發生變化。 那么，如何始終將鏈接（內容）始終放置在中間位置？

我要確保此DIV中的內容始終始終從頂部和側面居中。 垂直和水平居中。

當前代碼：（注釋樣式標記為空，因為它是動態填充的）

    <style type="text/css">
    .box{
    width:468px; /* php changes this sometimes */
    height:60px; /* php changes this sometimes */
    background:#eee;
    text-align:
    center;
    border:
    1px solid rgb(177, 172, 171);
    line-height: 61px;
    }
    </style>

    <div style="" class="box" id="">
<a style="color:#333;font-weight:bold" href="claimPrize();">Winner!</a>
</div>

Answer 1

不久前遇到了類似情況，進行了搜索，找到了一篇有關css-tricks絕對居中的文章， 這是該文章及其附帶的小提琴來進行測試。

的CSS

/* This parent can be any width and height */
.block {
  text-align: center;
}

/* The ghost, nudged to maintain perfect centering */
.block:before {
  content: '';
  display: inline-block;
  height: 100%;
  vertical-align: middle;
  margin-right: -0.25em; /* Adjusts for spacing */
}

/* The element to be centered, can
   also be of any width and height */
.centered {
  display: inline-block;
  vertical-align: middle;
  width: 300px;
}

的HTML

<div class="block" style="height: 300px;">

    <div class="centered">
        <h1>Some text</h1>
        <p>But he stole up to us again, and suddenly clapping his hand on my shoulder, said&mdash;"Did ye see anything looking like men going towards that ship a while ago?"</p>
    </div>

</div>

<div class="block" style="height: 200px;">

    <div class="centered">
        <h1>Some text</h1>
        <p>But he stole up to us again, and suddenly clapping his hand on my shoulder, said&mdash;"Did ye see anything looking like men going towards that ship a while ago?"</p>
    </div>

</div>

<div class="block" style="height: 600px;">

    <div class="centered">
        <h1>Some text</h1>
        <p>But he stole up to us again, and suddenly clapping his hand on my shoulder, said&mdash;"Did ye see anything looking like men going towards that ship a while ago?"</p>
    </div>

</div>

演示版

http://jsfiddle.net/andresilich/YqKMH/