# Black borders around the video in OBS

If a black border appears around the video, check that the custom CSS settings in the browser source has not been modified from the default setting:

```css
body { background-color: rgba(0, 0, 0, 0); margin: 0px auto; overflow: hidden; }
```

If you changed the default CSS settings, then you'll need to change them back to get rid of any background.

Also, ideally the width/height in OBS Browser source should be the same aspect ratio as the video. 1280x720 (not 800x600) This will fit the window to the video.

*original issue thread:* [*Reddit: Advice on adding to OBS*](https://www.reddit.com/r/OBSNinja/comments/g1xyoi/advice_on_adding_to_obs/)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.vdo.ninja/common-errors-and-known-issues/there-are-black-borders-around-the-video-in-obs..md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.