.popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.popup-content {
  position: relative;
  max-width: 400px;
    width: 90%;
}

.popup-content img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  cursor: pointer;
}

#closeBtn {
  position: absolute;
  top: -10px;
  right: -10px;
  background: #fff;
  padding: 5px 10px;
  cursor: pointer;
  border-radius: 50%;
  font-weight: bold;
}