.flex { display: flex; }
.align-center { justify-content: center; }
.align-vert,.align-vert.align-center { align-items: center; }

.modal { display: none; }
.modal--show, .modal--hide { display: flex; }
.modal--align {
  width: 100%;
  height: 100%;
  position: fixed;
  left: 0;
  top: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 1099;
}

.modal__container {
  position: relative;
  width: 100%;
  max-width: 600px;
  max-height: 800px;
  padding: 20px;
  margin: 12px;
  background: #fff;
}

.modal__close--x {
  font-size: 30px; 
  position: absolute;
  top: 3px;
  right: 10px;
}

.modal__close--x:hover {
  cursor: pointer;
}

.modal.modal--show {
  animation: modal-open 0.3s;
}

@keyframes modal-open {
  0%    { opacity: 0; }
  100%  { opacity: 1; }
}

/* Close */
.modal.modal--hide {
  animation: modal-close 0.3s;
}

@keyframes modal-close {
  0%    { opacity: 1; }
  100%  { opacity: 0; }
}