.container {
    width: 90%;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

h1 {
    color: #333;
}

p {
    color: #555;
    line-height: 1.6;
}

h2 {
    margin-top: 20px;
    color: #444;
}

h3 {
    margin-top: 20px;
    color: #555;
    text-align: center;
}

.example {
    margin-top: 20px;
    text-align: center;
}

.center-image2 {
    display: block;
    margin: 20px auto;
    max-width: 90%;
    height: auto;
    border: 2px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}