body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
    color: #ffffff;
}

header {
    background: #ffffff;
    color: #fff;
    padding: 10px 0;
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    color: #ffffff;
    border-bottom: 2px solid #ccc;
    padding-bottom: 10px;
    margin-top: 0;
}

article {
    background: #fff;
    padding: 15px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(253, 249, 249, 0.05);
}

article h2 a {
    color: #007BFF;
    text-decoration: none;
}

article h2 a:hover {
    text-decoration: underline;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th, table td {
    padding: 10px;
    border: 1px solid #ccc;
    text-align: left;
}

table th {
    background-color: #e2e2e2;
}

.error {
    color: red;
    font-weight: bold;
    border: 1px solid red;
    padding: 10px;
    background: #ffe6e6;
    border-radius: 5px;
}