Spoof the size of the HTML body element.

> [!WARNING]
> Spoofing document.body has been implemented, but it is more advisable to set `window.innerWidth` and `window.innerHeight` instead.

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## Properties

| Property                     | Type | Description                                     |
| ---------------------------- | ---- | ----------------------------------------------- |
| `document.body.clientWidth`  | uint | Width of the document's body                    |
| `document.body.clientHeight` | uint | Height of the document's body                   |
| `document.body.clientTop`    | uint | Width of the top border of the document's body  |
| `document.body.clientLeft`   | uint | Width of the left border of the document's body |