#popup-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}
#popup-content {
    background: white;
    padding: 20px;
    max-width: 90%;
    max-height: 90%;
    overflow: visible;
    position: relative;
    border-radius: 6px;
}

#popup-content p {
  margin-top: 0;
  margin-bottom: 0;
}

#popup-close {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 35px;
  height: 35px;
  background-color: #333;
  color: white;
  font-size: 22px;
  font-weight: bold;
  text-align: center;
  line-height: 33px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 5px rgba(0,0,0,0.3);
  user-select: none;
  transition: background-color 0.3s ease;
  z-index: 10;
  border: 2px solid white; /* <-- aquí está el borde blanco */
}