body {
  margin: 0;
  font-family: sans-serif;
  overflow: hidden; /* Prevent body scroll */
  background-color: lightblue;
}

.main-container {
  display: flex;
  height: 100vh;
}

.pane {
  height: 100vh;
  overflow-y: auto;
}

.calendar-pane {
  flex: 0 0 40%;
  overflow-y: hidden; /* no scroll bar, JavaScript will handle scrolling */
  padding-top: 40px;
  border-top: 2px solid #ccc;
  border-left: 2px solid #ccc;
  border-right: 2px solid #ccc;
}

.calendar-pane img {
  display: block;
  width: 100%;
  height: auto;
}

/* Text Pane */
.text-pane {
  flex: 1;
  padding: 20px;
  scroll-behavior: smooth;
}

.content-block {
    margin-bottom: 30px; /* Large gaps between content blocks help demonstrate scrolling */
  border-top: 1px dashed red; /* Visual indicator of the "Alignment Line" */
}