body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}
.header {
    background-color: #333;
    color: white;
    padding: 15px 20px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.header h1 {
    margin: 0;
    font-size: 24px;
}
.nav {
    margin-top: 10px;
}
.nav a {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    margin: 0 5px;
    border-radius: 5px;
    transition: background-color 0.3s;
}
.nav a:hover {
    background-color: #575757;
}
.container {
    max-width: 900px;
    margin: 20px auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
.content {
    padding-bottom: 50px;
}
h2 {
    color: #333;
    border-bottom: 2px solid #333;
    padding-bottom: 10px;
    margin-top: 0;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
table, th, td {
    border: 1px solid #ddd;
}
th, td {
    padding: 12px;
    text-align: left;
}
th {
    background-color: #f2f2f2;
}
tr:nth-child(even) {
    background-color: #f9f9f9;
}
form {
    margin-top: 20px;
}
input[type="text"], input[type="email"], input[type="password"], input[type="date"], input[type="number"], select, textarea, input[type="month"] {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
input[type="submit"] {
    background-color: #5cb85c;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}
input[type="submit"]:hover {
    background-color: #4cae4c;
}
.footer {
    text-align: center;
    padding: 10px;
    background-color: #333;
    color: white;
    position: fixed;
    bottom: 0;
    width: 100%;
}