body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f9f9f9;
}

.container {
    max-width: 500px;
    width: 90%;
    background: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
}

h1 {
    margin-bottom: 20px;
    color: #333;
}

form {
    margin-bottom: 20px;
}

input[type="file"] {
    display: block;
    margin: 0 auto 15px auto;
    font-size: 18px;
    padding: 10px;
    cursor: pointer;
    border: 2px solid #007bff;
    border-radius: 5px;
    background-color: #f4f4f4;
}

input[type="file"]:hover {
    border-color: #0056b3;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 15px 25px;
    font-size: 18px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

/* Style for the Back Button */
.back-button {
    background-color: red;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    display: inline-block;
    margin-top: 20px;
    text-align: center;
}

.back-button:hover {
    background-color: darkred;
}

@media screen and (max-width: 600px) {
    .container {
        padding: 15px;
    }
    h1 {
        font-size: 20px;
    }
    input[type="file"] {
        font-size: 16px;
        padding: 8px;
    }
    button, .back-button {
        font-size: 14px;
        padding: 10px 20px;
    }
}
@media screen and (max-width: 360px) {
    .container {
        width: 95%;
        padding: 10px;
    }
    h1 {
        font-size: 18px;
        margin-bottom: 15px;
    }
    input[type="file"] {
        font-size: 14px;
        padding: 6px;
    }
    button, .back-button {
        font-size: 12px;
        padding: 8px 16px;
    }
}