html, body {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
}

main {
  margin-top: 60px;
}

.parallax-section {
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  scroll-snap-align: start;
  padding: 40px 20px;
  box-sizing: border-box;
  opacity: 0;
  transition: opacity 1.2s ease-out;
  will-change: opacity;
  text-align: center;
}

.parallax-section.visible {
  opacity: 1;
}

.parallax-section p {
  max-width: 700px;
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.section-image {
  max-width: 500px;
  width: 100%;
  height: auto;
}