body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-image: url('https://img.freepik.com/free-vector/emoticons-with-empty-space-background_79603-1023.jpg'); 
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    max-width: 600px;
    background-color: rgba(255, 255, 255, 0.8); 
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
}

.upload-btn {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    background-color: #007bff; /* Blue button */
    color: #fff; /* White text */
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.upload-btn:hover {
    background-color: #0056b3; /* Darker blue on hover */
}