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

.header {
    background: #111;
    padding: 15px;
    color: white;
    display: flex;
    justify-content: space-between;
}

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

.content {
    padding: 20px;
    max-width: 900px;
    margin: auto;
}

.footer {
    background: #111;
    color: #fff;
    text-align: center;
    padding: 10px;
}
.post-card {
    background: white;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 6px;
}