How to center a div vertically in a window

I have a CSS layout that positions a div both horizontally and vertically relative to the window. It works well, but when I scroll down the page, the div stays centered as if the page hadn't moved.

width:600px;
height:300px;
position:absolute;
left:50%;
top:50%;
margin:-150px 0 0 -300px;
z-index:99;

Is there a way to achieve this using just CSS?

Answer №1

It appears that the position of your element is set to absolute.

Have you considered changing it to position: fixed;? This might yield better results.

Answer №3

Experiment with this CSS code: position:fixed;

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