.popup {
  display: none;
  /* ซ่อนป๊อปอัปในตอนแรก */
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 1000;
  padding: 20px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.close-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: red;
  color: white;
  border: none;
  padding: 5px 10px;
  cursor: pointer;
  z-index: 10;
}

.video-js {
  width: 80vw;
  height: 60vh;
  display: contents;
}