h1 {
  text-decoration: underline;
}

html,
body {
  margin: 0;
  padding: 0;
  background: transparent;
}

.iframe-container {
  width: 100%;
  height: 940px;
  overflow: hidden;
  position: relative;
  cursor: default;
  background: transparent;
}

.iframe-container iframe {
  position: absolute;
  top: -280px;
  left: 0;
  width: 100%;
  height: 2000px;
  border: none;
  pointer-events: auto;
}

.icon-button {
  position: absolute;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 4px;
  padding: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  transition: background 0.2s;
}

.icon-button:hover {
  background: rgba(230, 230, 230, 0.95);
}

.icon-button img {
  width: 16px;
  height: 16px;
  display: block;
}

.open-iframe-link {
  top: 10px;
  left: 10px;
}

.timeline-icon {
  top: 10px;
  right: 10px;
}