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

body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background: linear-gradient(to right, #e6ffe6, #ccffcc);
    color: #033;
    padding: 20px;
}

header {
    background-color: #2e8b57;
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

header h1 {
    margin-bottom: 10px;
}

nav a {
    color: white;
    text-decoration: none;
    margin-right: 15px;
    font-weight: bold;
}

nav a:hover {
    text-decoration: underline;
}

main {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.card {
    background-color: white;
    border-left: 6px solid #2e8b57;
    padding: 15px;
    border-radius: 10px;
    width: 300px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.card h2 {
    margin-bottom: 10px;
    color: #2e8b57;
}

footer {
    margin-top: 30px;
    padding: 15px;
    text-align: center;
    background-color: #2e8b57;
    color: white;
    border-radius: 10px;
}