body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #f4f4f4;
    color: #333;
}
.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}
header {
    background: #5cb85c;
    color: white;
    padding-top: 30px;
    min-height: 70px;
    border-bottom: 3px solid #333;
}
header h1 {
    font-size: 26px;
    margin: 0;
    padding: 0;
}
.category {
    background-color: #fff;
    border: 1px solid #ddd;
    margin-bottom: 20px;
    padding: 20px;
    border-radius: 5px;
}
.category h2 {
    font-size: 20px;
    margin-top: 0;
    margin-bottom: 15px;
    color: #5cb85c;
}
.question {
    padding: 15px;
    margin-bottom: 10px;
    background-color: #f9f9f9;
    border: 1px solid #eee;
    border-radius: 4px;
}
.question h3 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 16px;
}
.answer {
    padding: 15px;
    background-color: #f2f2f2;
    border-top: 1px solid #ddd;
    border-radius: 4px;
    color: #666;
}
.add-form, .edit-form {
    background-color: #fff;
    border: 1px solid #ddd;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
}
.add-form label, .edit-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}
.add-form input[type="text"],
.add-form textarea,
.edit-form input[type="text"],
.edit-form textarea {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}
.add-form input[type="submit"],
.edit-form input[type="submit"] {
    background-color: #5cb85c;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
.add-form input[type="submit"]:hover,
.edit-form input[type="submit"]:hover {
    background-color: #4cae4c;
}
.delete-btn {
    background-color: #d9534f;
    color: white;
    padding: 6px 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
}
.delete-btn:hover {
    background-color: #c9302c;
}
.edit-btn {
    background-color: #f0ad4e;
    color: white;
    padding: 6px 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    margin-right: 5px;
}
.edit-btn:hover {
    background-color: #eea236;
}