我有一个div与两个图像和一个h1。所有这些都需要在div中垂直对齐,彼此相邻。其中一个图像需要在div中绝对定位。

要在所有常见浏览器上工作,需要什么样的CSS ?

<div id="header">
  <img src=".." ></img>
  <h1>testing...</h1>
  <img src="..."></img>
</div>

当前回答

要将块元素定位到中心(适用于Internet Explorer 9及以上版本),它需要一个包装器div:

.vcontainer {
  position: relative;
  top: 50%;
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
}

其他回答

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
    <head>
        <style type="text/css">
            #style_center { position:relative; top:50%; left:50%; }
            #style_center_absolute { position:absolute; top:50px; left:50px; }
            <!--#style_center { position:relative; top:50%; left:50%; height:50px; margin-top:-25px; }-->
        </style>
    </head>

    <body>
        <div style="height:200px; width:200px; background:#00FF00">
            <div id="style_center">+</div>
        </div>
    </body>
</html>

我已经使用以下解决方案(没有定位和线高)一年多了,它适用于Internet Explorer 7和Internet Explorer 8。

<style>
.outer {
    font-size: 0;
    width: 400px;
    height: 400px;
    background: orange;
    text-align: center;
    display: inline-block;
}

.outer .emptyDiv {
    height: 100%;
    background: orange;
    visibility: collapse;
}

.outer .inner {
    padding: 10px;
    background: red;
    font: bold 12px Arial;
}

.verticalCenter {
    display: inline-block;
    *display: inline;
    zoom: 1;
    vertical-align: middle;
}
</style>

<div class="outer">
    <div class="emptyDiv verticalCenter"></div>
    <div class="inner verticalCenter">
        <p>Line 1</p>
        <p>Line 2</p>
    </div>
</div>

只使用Bootstrap类:

Div: class="容器d-flex" div中的元素:class="m-auto"

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.3/css/bootstrap.min.css" crossorigin="anonymous"> < span class=" font - family:宋体" style=" font - family:宋体;background - color: # 333;" > < h2 class = " m-auto " > < a href = " https://hovermind.com/ " > H➲版本➾M⇡ND < / > < / h2 > < / div >

使用CSS垂直居中,您可以让外部容器充当一个表,并将内容作为一个表单元格。在这种格式中,您的对象将保持居中。:)

我在JSFiddle中嵌套了多个对象作为一个例子,但核心思想是这样的:

HTML

<div class="circle">
  <div class="content">
    Some text
  </div>
</div>

CSS

.circle {
  /* Act as a table so we can center vertically its child */
  display: table;
  /* Set dimensions */
  height: 200px;
  width: 200px;
  /* Horizontal center text */
  text-align: center;
  /* Create a red circle */
  border-radius: 100%;
  background: red;
}

.content {
  /* Act as a table cell */
  display: table-cell;
  /* And now we can vertically center! */
  vertical-align: middle;
  /* Some basic markup */
  font-size: 30px;
  font-weight: bold;
  color: white;
}

多对象示例:

HTML

<div class="container">
  <div class="content">

    <div class="centerhoriz">

      <div class="circle">
        <div class="content">
          Some text
        </div><!-- content -->
      </div><!-- circle -->

      <div class="square">
        <div class="content">
          <div id="smallcircle"></div>
        </div><!-- content -->
      </div><!-- square -->

    </div><!-- center-horiz -->

  </div><!-- content -->
</div><!-- container -->

CSS

.container {
  display: table;
  height: 500px;
  width: 300px;
  text-align: center;
  background: lightblue;
}

.centerhoriz {
  display: inline-block;
}

.circle {
  display: table;
  height: 200px;
  width: 200px;
  text-align: center;
  background: red;
  border-radius: 100%;
  margin: 10px;
}

.square {
  display: table;
  height: 200px;
  width: 200px;
  text-align: center;
  background: blue;
  margin: 10px;
}

.content {
  display: table-cell;
  vertical-align: middle;
  font-size: 30px;
  font-weight: bold;
  color: white;
}

#smallcircle {
  display: inline-block;
  height: 50px;
  width: 50px;
  background: green;
  border-radius: 100%;
}

结果

https://jsfiddle.net/martjemeyer/ybs032uc/1/

<div id="header" style="display: table-cell; vertical-align:middle;">

...

或CSS

.someClass
{
   display: table-cell;
   vertical-align:middle;
}

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