body {
    font-family: Arial;
    background: #f4f4f4;
    margin: 0;
}

header {
    background: #111;
    color: white;
    text-align: center;
    padding: 20px;
}

.apps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 20px;
}

.card {
    background: white;
    width: 250px;
    margin: 15px;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.card img {
    width: 80px;
}

.btn {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    background: #28a745;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

.btn:hover {
    background: #1e7e34;
}

footer {
    background: #111;
    color: white;
    text-align: center;
    padding: 10px;
}