body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}
.container {
    width: 60%;
    margin: 0 auto;
}
.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}
.section.visible {
    opacity: 1;
    transform: translateY(0);
}
.section:nth-child(even) {
    background-color: #ddd;
}
h1, p {
    text-align: center;
    max-width: 600px;
}