.body, html {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-image: url('images/stars3.gif');
  background-repeat: repeat;
  background-position: center;
  width: 100%;
  height: 100vh;
}

.entrada-pagina {
  max-width: 90%;
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.entrada-mundo {
  position: relative;
  height: 40%;
  width: auto; 
  max-width: 100%; 
  text-align: center;
  transform: translate(0, -160%);
  right: 10.8%;
}

.gif-button {
  background: none; 
  border: none;
  padding: 0;
  margin: 0; 
  display: inline-block; 
  cursor: pointer; 
  height: 100%;
  width: 100%;
  bottom: 190%; 
  right: 10.8%;
}

.popup {
  display: none;
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.popup-content {
  background-image: url("images/LUBIE KWIATY.gif");
  background-repeat: no-repeat;
  padding: 20px;
  border-radius: 6px;
  text-align: center;
  max-width: 600px;
  width: 100%;
  height: 60%;
  margin-left: 1%;
  top: 50%;
}

.close-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 24px;
  cursor: pointer;
  color: #000;
}

.hidden {
  display: none;
}

.show {
  display: flex;
}

.img-popup {
  
}