html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: black;
}

.video-container {
  position: relative;
  width: 100vw;
  height: 100vh;
}

video {
  width: 100%;
  height: 100%;
  object-fit: contain; /* fill screen, crop if needed */
  background: black;
}


.fs-btn {
  position: absolute;
  bottom: 12px;
  right: 12px;
  z-index: 10;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border: none;
  padding: 8px 10px;
  font-size: 16px;
  cursor: pointer;
  border-radius: 4px;
}

.fs-btn:hover {
  background: rgba(0, 0, 0, 0.85);
}