The `transform-origin` property is used to set the point around which a CSS transformation is applied. For example, when performing a `rotate` (which you will do later in this project), the `transform-origin` determines around which point the element is rotated.
Give the `.line` selector a `transform-origin` property of `0% 0%`. This will offset the origin point by `0%` from the left and `0%` from the top, setting it to the top left corner of the element.
# --hints--
Your `.line` selector should have a `transform-origin` property set to `0% 0%`.
```js
const transformOrigin = new __helpers.CSSHelp(document).getStyle('.line')?.transformOrigin;
