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

body {
    font-family: Verdana, Arial, sans-serif;
    line-height: 1.5;
    color: #333333;
    background-color:greenyellow;
}

header {
    background: linear-gradient(135deg, #003087, #0055cc);
    color: skyblue;
    padding: 1rem 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

header h1 {
    text-align: center;
    font-size: 1.6rem;
}

nav {
    text-align: center;
    margin-top: 0.9rem;
}

nav a {
    color:  greenyellow;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
    padding: 8px 12px;
    border-radius: 6px;
    transition: background 0.3s;
}

nav a:hover {
    background: rgba(255,255,255,0.2);
    color: #FFCC00;
}

main {
    max-width: 1100px;
    margin: 2rem auto;
    padding: 0 1.2rem;
}

h2, h3 {
    color:#006787;
    margin: 1.8rem 0 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: white;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

th, td {
    padding: 14px;
    text-align: left;
    border: 1px solid #ccc;
}

th {
    background: #003087;
    color: white;
    font-weight: bold;
}

tr:nth-child(even) {
    background-color: #f0f4ff;
}

footer {
    background: #003087;
    color: white;
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 4rem;
}

iframe {
    border: 4px solid #003087;
    border-radius: 12px;
    width: 100%;
    height: 420px;
}

.btn {
    display: inline-block;
    background: #0055cc;
    color: C;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    margin: 1rem 0;
}

@media (max-width: 600px) {
    nav a { margin: 5px; font-size: 0.95rem; }
}