/* Pozadí popupu */
#popup {
  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: 999999;
}

/* Obsah popupu */
.popup-content {
  background: white;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  font-family: Arial;
  max-width: 600px;
}

/* tlačítko */
button {
  margin-top: 15px;
  padding: 10px 20px;
  border: none;
  background: #77b844;
  color: white;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background: #487a20;
}