.modal-window {
    position: absolute;
    z-index:10000000;
    top:0;
    left:0;
    display: none;
}
.modal-block {
    position: fixed;
    z-index:100000;
}
.cloce-modal-window {
    position: absolute;
    z-index:100;
    width: 30px;
    height: 30px;
}