sectiona {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

h2, h3 {
    color: #333;
}

.service-categorya {
    margin-bottom: 30px;
}

ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    margin-bottom: 10px;
}