div中的CSS边框不适合内容的高度

Question

我创建了一个具有BORDER属性的CSS DIV，以适合100％的窗口和内容高度。当内容小于窗口高度时，它可以正常工作。但是，如果内容大于窗口高度，则边框仍仅适合窗口高度。

下面给出了我使用的代码：

html {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  zoom: 1;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

html,
body {
  height: 100%;
  margin: 0px;
  padding: 0px;
}

.form {
  position: relative;
  top: 0;
  bottom: 0;
  box-sizing: border-box;
  width: 520px;
  height: 100%;
  margin: 0 auto;
  vertical-align: middle;
  border: 1px solid blue !important;
  box-shadow: 0px 0px 3px #ccc, 0 10px 15px #eee inset;
  border-radius: 5px;
  font-family: "Times New Roman", Georgia, Serif;
}

<div class="form"></div>

边角快照如下

Answer 1

它可以与min-height一起使用。 您的问题是您在body标签上设置了一个高度，这限制了form的大小，只有内容溢出了您的包装盒。

html {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  zoom: 1;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

html, body {
  height: 100%;
  margin: 0px;
  padding: 0px;
}

.form {
  position: relative;
  top: 0;
  bottom: 0;
  box-sizing: border-box;
  width: 520px;
  min-height: 100%;
  margin: 0 auto;
  vertical-align: middle;
  border: 1px solid blue !important;
  box-shadow: 0px 0px 3px #ccc, 0 10px 15px #eee inset;
  border-radius: 5px;
  font-family: "Times New Roman", Georgia, Serif;
}

<div class="form">
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</div>