/* Reset and full height flex layout */
html, body {
  height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
}

/* Hero area (header + content) should stretch */
.hero_area {
  flex: 1;  /* takes up all available height */
  display: flex;
  flex-direction: column;
}

/* Content inside hero_area expands */
.container {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Ensure lesson detail content is centered properly */
.lesson-detail {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;   /* centers horizontally */
}

/* Lesson styles */
.lesson-name {
  margin-top: 20px;
  margin-bottom: 20px;
  font-size: 2em;
  font-weight: bold;
  text-align: center;
  width: 100%;   /* ensures heading spans full width */
}

/* Footer styles */
.footer_section {
  margin-top: auto;   /* push footer down */
  text-align: center;
  padding: 10px 0;
}

.footer_section p {
  margin: 0;
}