body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
}

.top-bar {
    background-color: #333;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
}

.logo a {
    color: #fff;
    text-decoration: none;
    font-size: 24px;
}

.menu {
    display: flex;
}

.menu-item {
    margin-right: 20px;
}

.menu-item a {
    color: #fff;
    text-decoration: none;
}

.divider {
    height: 1px;
    background-color: #ccc;
}

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

.error {
    text-align: center;
}

.error-number {
    font-size: 100px;
    color: #333;
}

.error-text {
    margin-top: 20px;
}

.error-text h1 {
    font-size: 36px;
}

.error-text p {
    font-size: 18px;
}

.error-text a {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background-color: #333;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
}

.footer {
    background-color: #333;
    color: #fff;
    padding: 20px 0;
    text-align: center;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
}