body {
    font-family: 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    background-color: #f4f7f6;
    color: #333;
}

header {
    background-color: #333; 
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}
nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
    margin: 10;
    padding: 0;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: blue;
}
main {
    max-width: 900px;
    margin: 20px auto;
    padding: 0 20px;
}

.card {
    background: white;
    padding: 30px;
    margin-bottom: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h1 { margin: 0; font-size: 1.5rem; }
h2 { color: brown; border-bottom: 2px solid #eee; padding-bottom: 10px; }
h3 { color: #555; }


table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

caption {
    font-weight: bold;
    margin-bottom: 10px;
    font-style: italic;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: #f8f8f8;
    color: #333;
}

tr:hover {
    background-color: #f1f1f1;
}
footer {
    text-align: center;
    padding: 40px 20px;
    background: #333;
    color: white;
    margin-top: 40px;
}

footer a {
    color: blue;
    text-decoration: none;
}