body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1rem;
}

.main {
    width: 80%;
    margin: 0 auto;
    padding: 2rem 0;
}

.app-details {
    background-color: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.app-details p {
    line-height: 1.6;
    margin-bottom: 1rem;
}

.app-details ul {
    margin-bottom: 1rem;
}

.app-details li {
    list-style-type: disc;
    margin-left: 20px;
}