body {
    font-family: Arial, sans-serif;
    margin: 30px;
    background: #f4f6f8;
}

h1, h2 {
    color: #333;
}

.upload {
    margin-bottom: 10px;
}

button {
    padding: 10px 20px;
    margin: 20px 0;
    cursor: pointer;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
}

table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 30px;
    background: white;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background: #222;
    color: white;
}

.red {
    background-color: #f8d7da;
}

.green {
    background-color: #d4edda;
}