body {
    font-family: 'Roboto', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.blog-article {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    background-color: #ffffff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
}

h1 {
    font-size: 2.5em;
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

h2 {
    font-size: 1.8em;
    color: #2980b9;
    margin-top: 30px;
}

p {
    margin-bottom: 20px;
}

.highlight {
    background-color: #ffffd9;
    padding: 5px;
    border-radius: 3px;
}

blockquote {
    border-left: 4px solid #3498db;
    padding-left: 20px;
    margin-left: 0;
    font-style: italic;
    color: #555;
}

.jxgbox {
    margin: 20px auto;
    border: 1px solid #ddd;
}

@media (max-width: 768px) {
    .blog-article {
        padding: 15px;
    }
    h1 {
        font-size: 2em;
    }
    h2 {
        font-size: 1.5em;
    }
}


.theorem-box {
    background-color: #f0f8ff;
    border: 2px solid #4682b4;
    border-radius: 5px;
    padding: 15px;
    margin: 20px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.theorem-box h3 {
    color: #4682b4;
    margin-top: 0;
}

.theorem-box p {
    margin-bottom: 0;
}