body {
  margin: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  font-family: Arial, sans-serif;
}

header, footer {
  background: #222;
  color: #fff;
  padding: 10px;
  text-align: center;
}

main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.showcase {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
}

.iframe-container {
  display: flex;
  height: 100%;
  width: 100%;
  transition: transform 0.6s ease;
}

iframe {
  width: 100%;
  height: 100%;
  border: none;
  flex-shrink: 0;
}

.controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
}

button, #downloadBtn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  background: #444;
  color: #fff;
  font-size: 16px;
  text-decoration: none; /* make link look like button */
  display: inline-block;
}

button:hover, #downloadBtn:hover {
  background: #666;
}