asp.net - 透明div上页面中央的白色div

Question

我试图在一个半透明的 div 上显示一个小的白色 div(这是 100% 的页面和 0.6 的不透明度)

分区:

<div id="confirmDialogSingle" class="Loading" runat="server" visible="false">
<div id="msgBox" class="loadingImg">
<br /> You already have a request on the chosen date. Are you sure you want to submit this request?<br /><br />
<asp:Button ID="BtnConfirmSingle" runat="server" Text="Yes"  Width="60px" onclick="BtnConfirmSingle_Click" />&nbsp;
<asp:Button ID="BtnNo" runat="server" Text="Cancel" onclick="BtnNo_Click" />
</div>
</div>

CSS:

.Loading
{
    width: 100%; 
    height: 100%; 
    top:0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    position: fixed;
    background: white;
    opacity:0.6;
    z-index:9999;
    transition: width 2s; -moz-transition: width 2s;/* Firefox 4 */ -webkit-transition: width 2s; /* Safari and Chrome */ -o-transition: width 2s; /* Opera */

}

.loadingImg
{
    opacity: 1;
    margin: auto;
    width: 700px;
    text-align: center;
    height: 150px;
    padding: 10px;
    background-color: white;
    border:1px solid #d9a0e2;
}

问题是小 div (.loadingImg) 没有显示在屏幕中央(也尝试了前 50% 和左 50%)并且它的背景仍然显示为透明而不是白色!

Answer 1

试试这个:

.Loading {
    position:fixed;
    width:100%; height:100%; 
    top:0; left:0;
    background: rgba(255,255,255,0.6);
    z-index:9999;
    transition: width 2s; -moz-transition: width 2s;/* Firefox 4 */ -webkit-transition: width 2s; /* Safari and Chrome */ -o-transition: width 2s; /* Opera */ }

.loadingImg {
    position: absolute;
    top: 50%; margin-top:-85px;
    left:50%; margin-left:-360px;
    width:700px; height:150px;
    opacity: 1;
    text-align: center;
    padding: 10px;
    background-color: #FFF;
    border: 1px solid #d9a0e2;
}

或者，您可以使用半透明的 png 图像作为 .Loading div 的背景图像