body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f8f8f8;
    color: #333;
    margin: 0;
    padding: 0;
}

.header-menu {
    background-color: #333;
    padding: 10px;
    margin-top: 10px;
    text-align: center;
}

.header-menu a {
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    display: inline-block;
}

.header-menu a:hover {
    background-color: #444;
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

h1 {
    font-size: 30px;
    margin-bottom: 20px;
}

h2 {
    border-bottom: 1px solid #ddd;
    padding-bottom: 5px;
    margin-top: 30px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

table th, table td {
    padding: 10px;
    border: 1px solid #ddd;
}

table th {
    background-color: #f0f0f0;
}

table tr:nth-child(even) {
    background-color: #fafafa;
}

a {
    color: #0056b3;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

input[type="text"], input[type="password"], select {
    width: 100%;
    padding: 8px;
    border-radius: 4px;
    border: 1px solid #ccc;
    box-sizing: border-box;
    margin-bottom: 10px;
}

input[type="submit"], button {
    background-color: #0056b3;
    color: white;
    border: none;
    padding: 8px 15px;
    cursor: pointer;
    border-radius: 4px;
}

input[type="submit"]:hover, button:hover {
    background-color: #004080;
}