#modal {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background-color: rgba(0,0,0,.5);
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal__window {
  position: relative;
  background-color: white;
  padding: 2em 2em;
}

.modal__close {
  position: absolute;
  top: -30px;
  right: 0;
}