main {
  height: 100dvh;
  padding: 2rem;
  padding-bottom: 105px;
  overflow: scroll;
}

main > div:first-child {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

main > div:first-child h1 {
  font-size: 5rem;
  font-weight: 400;
}

main > div:first-child p {
  font-size: 1.1rem;
  max-width: 400px;
}

main > hr {
  margin: 1.5rem 0;
}

main > div:last-child {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(4, 1fr);
}

.learning-point {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.learning-point:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.learning-point h3 {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
  color: #333;
}

.learning-point p {
  font-size: 1.1rem;
  color: #555;
  line-height: 1.6;
}

/*-------------For phones and small mobile devices section--------------*/

@media screen and (max-width: 767px) {
  main {
    padding: 1rem;
    padding-bottom: 105px;
    overflow-y: scroll;
  }

  main > div:first-child {
    flex-direction: column;
    gap: 10px;
    padding: 0 1rem;
  }

  main > div:first-child h1 {
    font-size: 3rem;
  }

  main > div:first-child p {
    text-align: center;
  }

  main > div:last-child {
    grid-template-columns: repeat(1, 1fr);
    gap: 1rem;
  }

  main > div:last-child > div {
    height: 200px;
  }

  .learning-point {
    padding: 0.8rem;
  }

  .learning-point h3 {
    font-size: 1.3rem;
  }
}

/*-------------For ipads and tablets section--------------*/

@media screen and (min-width: 768px) and (max-width: 1024px) {
  main > div:last-child {
    grid-template-columns: repeat(2, 1fr);
  }
}