* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    background-color: #1f2937;
    padding: 15px 40px;
    position: fixed; 
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav h2 {
    color: #ffffff;
    font-family: Arial, sans-serif;
    font-size: 22px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav ul li a {
    text-decoration: none;
    color: #ffffff;
    font-family: Arial, sans-serif;
    font-size: 16px;
    padding: 8px 14px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

nav ul li a:hover {
    background-color: #2563eb;
}