개념화 앱

<iframe
  src="https://solar-world-clock.pondered100.chatgpt.site"
  title="PonderEd 시간의 개념화"
  width="100%"
  height="900"
  loading="lazy"
  allowfullscreen>
</iframe>

.time-app-frame {
width: 100%;
height: min(900px, 90vh);
min-height: 700px;
border: 0;
border-radius: 16px;
}