div中的垂直对齐div不起作用 - CSS

Question

JS小提琴:http://jsfiddle.net/Rkh8L/

我试图在div中垂直中间div.我想成为垂直中间的班级是MonsterImage.

这里是整个代码

            <div style="float: left; text-align: center; vertical-align: middle; margin:10px;">

                <asp:RadioButton  ID="RdButtonMonsterImages" ClientIDMode="Static" runat="server" />

                <div class="permonster" >
                    <div class="MonsterImage"></div>            
                </div>
        </div>



            .permonster
        {
            width: 130px;
            height: 120px;
            text-align: center;
            vertical-align: middle;
            border-top: 1px solid #f7fcff;
            background: #ababab;
            background: -webkit-gradient(linear, left top, left bottom, from(#e3e6e8), to(#ababab));
            background: -webkit-linear-gradient(top, #e3e6e8, #ababab);
            background: -moz-linear-gradient(top, #e3e6e8, #ababab);
            background: -ms-linear-gradient(top, #e3e6e8, #ababab);
            background: -o-linear-gradient(top, #e3e6e8, #ababab);
            -webkit-border-radius: 8px;
            -moz-border-radius: 8px;
            border-radius: 8px;
            -webkit-box-shadow: rgba(0,0,0,1) 0 1px 0;
            -moz-box-shadow: rgba(0,0,0,1) 0 1px 0;
            box-shadow: rgba(0,0,0,1) 0 1px 0;
            text-decoration: none;
            padding:2px;
        }


            .MonsterImage
            { 
border-width: 0px; border-style: none; 
background-image: url(http://static.monstermmorpg.com/images/csssprites/RegisterCSS.png); 
background-color: transparent; 
margin:auto; 
background-repeat: no-repeat; 
background-position: -0px -120px;  
width: 130px; 
height: 96px;   
            }

Answer 1

您可以在div中居中(垂直和水平对齐)div,如下所示

HTML

<div id="parent">
    <div id="child">
    </div>
</div>

CSS

#parent {
    background-color: #333333;

    position: relative;
    height: 300px; 
    width:300px;
}

#child {
    background-color: #cccccc;

    position: absolute;
    top: 50%;
    left: 50%;
    height: 30%;
    width: 50%;
    margin: -15% 0 0 -25%;
}

请参阅此文章,其中解释了它的工作原理
注意:背景颜色仅用于说明目的.

请参阅下面的结果.