How to place a div center of the window after scrolling [closed]

Answer 1

You can do it with a fixed width positioned in center and with negative margins with half of the width and half of the height. So for a div with id your_div that is 200x200 in size, you'd do:

#your_div {
    width: 200px;
    height: 200px;
    position: fixed;
    top: 50%;
    left: 50%;
    margin-left: -100px;
    margin-top: -100px;
}