dashboard theme is not spanning window evenly

I am trying to create a first dashboard and have created a simple line chart. I tried to stick to the example dashboard which looks great.

But in my case the grid is not spanning the entire window evenly. It re-scales when I make the browser window smaller, but in full size i always have to much space on the right side.

I don’t see any difference to the approach in the example dashboard, so what am I doing wrong?

---
theme: dashboard
title: Testing Line Chart with Observable Plot
sql: 
    financial_data: ./data/financial_data.db
---

```sql id=stockPriceHistory 
SELECT
	to_timestamp(CAST(json_extract(json_extract(raw_json, '$.v'), '$[0]') AS double)) AS time,
	CAST(json_extract(json_extract(raw_json, '$.v'), '$[4]') AS double) AS close
FROM financial_data.pre_stage.ps_stock_price_history_t
WHERE json_extract_string(raw_json,'$.symbol') = 'BRK.B'
```

```js
function simpleLineChart(data, {width}) {
  return Plot.plot({
    marks: [Plot.line(data, {x: "time", y: "close"})],
    width, height: 400, marginLeft: 50, marginRight: 50, y: {grid: true}
  });
}
```

```
<div class="grid grid-cols-1"> 
  <div class="card"> 
    ${resize((width) => simpleLineChart(stockPriceHistory, {width}))} 
  </div> 
</div> 
```

Okay, i got it. “toc: false” made all the difference:

---
theme: [dashboard, wide]
title: Testing Line Chart with Observable Plot
toc: false
sql: 
    financial_data: ./data/financial_data.db
---