body {
  font-family: sans-serif;
  padding: 20px;
  text-align: center;
}

#collage {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
  width: 450px;
  margin: 20px auto;
}

.cell {
  width: 150px;
  height: 150px;
  background: #eee;
  cursor: grab;
}

.cell.dragging {
  opacity: 0.4;
}

.cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#inputs {
  max-width: 450px;
  margin: auto;
}

#inputs input {
  width: 100%;
  margin: 4px 0;
  padding: 6px;
}

#controls {
  margin-top: 15px;
}

#controls button {
  margin: 5px;
  padding: 8px 14px;
}

#progressBar {
  display: block;
  width: 450px;
  height: 18px;
  margin: 10px auto 0;
}

.hidden {
  display: none;
}

#playlistBox {
  max-width: 450px;
  margin: 30px auto;
}

#playlistUrl {
  width: 100%;
  padding: 8px;
}

.disclaimer {
  font-size: 0.8rem;
  color: #555;
}