Generate the CSS code to change the font of the following HTML element
<h1>This is a headline</h1>
Here is one way to change the font for the h1 element:

```css
h1 {
  /* Set the font family */
  font-family: Arial, Helvetica, sans-serif;
}
```

In the example above, the font family is set to the Arial font, with Helvetica and sans-serif as fallback options. You can put any font of your choice.
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate the CSS code to change the font of the following HTML element

### Input:
<h1>This is a headline</h1>

### Output:
Here is one way to change the font for the h1 element:

```css
h1 {
  /* Set the font family */
  font-family: Arial, Helvetica, sans-serif;
}
```

In the example above, the font family is set to the Arial font, with Helvetica and sans-serif as fallback options. You can put any font of your choice.