.case {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

header {
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    font-size: 2.5em;
    color: #333;
}

header h2 {
    font-size: 1.5em;
    color: #555;
}

section {
    margin-bottom: 20px;
}

h3 {
    font-size: 1.3em;
    color: #333;
    border-bottom: 2px solid #eee;
    padding-bottom: 5px;
}

p, ul {
    font-size: 1em;
    color: #555;
    line-height: 1.6;
}

ul {
    list-style-type: disc;
    margin-left: 20px;
}

footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 10px;
    border-top: 1px solid #eee;
}