> For the complete documentation index, see [llms.txt](https://xlswriter-docs.viest.me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xlswriter-docs.viest.me/english/style-list/cell-border.md).

# Cell border

## **Function Prototype**

```php
Border(int $borderStyle): \Vtiful\Kernel\Format
```

## example

```php
$config = [
    'path' => './tests'
];

$fileObject = new \Vtiful\Kernel\Excel($config);

$fileObject = $fileObject->fileName('tutorial.xlsx');
$fileHandle = $fileObject->getHandle();

$data = [
    ['viest1', 21, 100, "A"],
    ['viest2', 20, 80, "B"],
    ['viest3', 22, 70, "C"],
];

$format = new \Vtiful\Kernel\Format($fileHandle);

// Create a border style
$borderStyle = $format
    ->border(\Vtiful\Kernel\Format::BORDER_THIN)
    ->toResource();

$fileObject->header(['name', 'age', 'score', 'level'])
    ->data($data)
    ->setRow('A1', 20, $borderStyle)
    ->output();
```