<s>[INST] # Goal: Create a layout with a simple menu bar at the top, and three buttons below it, centered vertically and horizontally. Use a css grid for the layout.

Here's what I've tried:

```html
<!DOCTYPE html>
<html>
<head>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="container">
        <div class="menu-bar">
            <div class="menu-item">Menu Item 1</div>
            <div class="menu-item">Menu Item 2</div>
            <div class="menu-item">Menu Item 3</div>
        </div>
        <div class="button-container">
            <button>Button 1</button>
            <button>Button 2</button>
            <button>Button 3</button>
        </div>
    </div>
</body>
</html>
```

```css
.container {
    display: grid;
    grid-template-rows: 1fr 9fr;
    height: 100vh;
}

.menu-bar {
    background-color: #e0e0e0;
    grid-row: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.menu-item {
    justify-self: center;
    align-self: center;
}

.button-container {
    grid-row: 2;
    display: grid;
    justify-content: center;
    align-content: center;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

button {
    justify-self: center;
    align-self: center;
}
```

I'm close, but the buttons aren't centered vertically and horizontally as they should be based on the code. What am I doing wrong?[/INST]