body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
}

.header {
    background-color: #3cba54;
    color: white;
    padding: 20px;
    text-align: center;
}

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

.app-card {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 10px;
    margin: 10px;
    width: 200px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.app-card img {
    width: 100px;
    height: 100px;
}

.app-card h3 {
    font-size: 18px;
    margin: 10px 0;
}

.app-card p {
    font-size: 14px;
    color: #666;
}

.btn {
    padding: 10px;
    background-color: #4285f4;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

.btn:hover {
    background-color: #357ae8;
}

.app-details {
    text-align: center;
    margin: 40px;
}

.app-details img {
    width: 150px;
    height: 150px;
}

.btn-download {
    display: inline-block;
    padding: 10px;
    background-color: #34a853;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

.btn-download:hover {
    background-color: #2c8e42;
}