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

header {
    background-color: #222;
    color: white;
    padding: 1rem;
    text-align: center;
}

.container {
    display: grid;
    grid-template-columns: 1fr 3fr 1fr;
    gap: 1rem;
    padding: 1rem;
}

.left-column,
.right-column {
    background-color: #f0f0f0;
    padding: 1rem;
    border: 1px solid #ccc;
}

.center-column {
    background-color: #fff;
    padding: 1rem;
    border: 1px solid #ccc;
}

.post {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

footer {
    background-color: #e9e9e9;
    padding: 1rem;
    text-align: center;
    border-top: 1px solid #ccc;
}