.replace-numbers-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.replace-numbers-form {
    margin-bottom: 15px;
}

.replace-numbers-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.replace-numbers-form select,
.replace-numbers-form textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.replace-numbers-form button {
    padding: 8px 15px;
    background-color: #0073aa;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.replace-numbers-form button:hover {
    background-color: #005177;
}