.modal {
  display: none;
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.6);
  z-index: 1000;
}
.modal .modal_content {
  position: relative;
  background-color: #fefefe;
  margin: 15% auto;
  padding: 20px;
  border: 1px solid #888;
  width: 80%;
  max-width: 600px;
  z-index: 99999;
}
.modal .modal_content .close_modal_window {
  color: #aaa;
  /* float: right; */
  position: absolute;
  top: 0;
  right: 0;
  padding: 5px;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
}