How to design a CSS for a centered floating confirm dialog?
Question
I'm looking for a way to display a confirm dialog that's always centered on the page, and floating over the page.
Tried that, but it's not 'always centered' at all, since the position is fixed:
.Popup
{
text-align:center;
position: absolute;
bottom: 10%;
left: 27%;
z-index:50;
width: 400px;
background-color: #FFF6BD;
border:2px solid black;
}
Any idea? Thanks
Solution
Try using this CSS
#centerpoint {
top: 50%;
left: 50%;
position: absolute;
}
#dialog {
position: relative;
width: 600px;
margin-left: -300px;
height: 400px;
margin-top: -200px;
}
<div id="centerpoint">
<div id="dialog"></div>
</div>
#centerpoint should be the container div of the dialog
Note that the #centerpoint DIV should be inside the body element or inside elements that don't have a position: relative; property
OTHER TIPS
Compared to @Toma's answer, you can do it on one element
#theDiv {
position: fixed;
top: 50%;
left: 50%;
width: 200px;
margin-left: -100px;
height: 50px;
margin-top: -25px;
background: yellow;
}
<div id="theDiv" />
This allows you to place it anywhere on the page regardless of parent containers and their position
properties.
CSS3 transform can be used to avoid hardcoded width and margins:
.dialog {
top: 50%;
left: 50%;
-webkit-transform: translateX(-50%) translateY(-50%);
-moz-transform: translateX(-50%) translateY(-50%);
-ms-transform: translateX(-50%) translateY(-50%);
transform: translateX(-50%) translateY(-50%);
}
Example usage: http://tympanus.net/codrops/2013/06/25/nifty-modal-window-effects/
.Popup
{
width:400px;
margin-left:auto;
margin-right:auto;
}
That's horizontal alignment; vertical alignment is a little trickier. Just Google around for "css vertical center" or something.