This custom CSS is designed to transform the popup URL of a YouTube live chat into a simple, lightweight, and transparent overlay for OBS (Open Broadcaster Software). The CSS removes all unnecessary elements from the HTML, creating a clean and minimalistic chat overlay perfect for live streaming.

• Transparent Background: Ensures the chat area blends seamlessly with your stream.
• Full Width and Height: The chat area takes up the entire popup window, providing maximum visibility.
• Owner Highlight: Messages from the owner are highlighted with a distinct color.
• Removal of Unnecessary Elements: Strips away headers, footers, input areas, and other non-essential components to keep the chat overlay clean and focused.

1. Open YouTube Live Chat in a Popup:

   • Go to your YouTube live stream page.
   • Open the chat in a popup window by clicking on the three dots in the top right corner of the chat and selecting "Popout chat."

2. Add Custom CSS in OBS:

   • In OBS, add a new browser source.
   • Paste the URL of your YouTube live chat popup.
   • Under "Custom CSS," paste the following code:

   /* Define styles for the chat area */
   body, yt-live-chat-renderer, yt-live-chat-item-list-renderer {
       background-color: transparent !important;
       margin: 0 !important;
       overflow: hidden !important;
       width: 100% !important;
       height: 100% !important;
   }
   
   /* Adjusts message area height and defines positioning */
   yt-live-chat-item-list-renderer {
       position: absolute;
       bottom: 20px;
       height: calc(100% - 40px) !important;
       padding: 0 10px !important;
       box-sizing: border-box !important;
   }
   
   /* Styles for messages and owner author color */
   yt-live-chat-text-message-renderer {
       background-color: transparent !important;
       width: calc(100% - 20px) !important;
       margin: 5px 0 !important;
       padding: 0 !important;
       font-size: 14px !important;
       color: #fff !important;
       white-space: pre-wrap !important;
   }
   
   /* Owner author color */
   yt-live-chat-text-message-renderer.yt-live-chat-text-message-author-is-owner #author-name {
       color: #000 !important;
   }
   
   /* Removes unnecessary elements and notices */
   #header, #primary-content, #secondary-content, #footer,
   yt-live-chat-header-renderer, yt-live-chat-message-input-renderer,
   yt-live-chat-action-panel-renderer, yt-live-chat-message-prompt-renderer,
   yt-live-chat-viewer-engagement-message-renderer,
   yt-live-chat-text-message-renderer #img, ::-webkit-scrollbar,
   yt-live-chat-membership-only-mode-message-renderer,
   yt-live-chat-mode-change-message-renderer,
   yt-live-chat-restricted-participation-renderer,
   yt-live-chat-author-chip-renderer,
   yt-live-chat-legacy-paid-message-renderer,
   yt-live-chat-legacy-paid-sticker-renderer,
   yt-live-chat-pinned-message-renderer,
   yt-live-chat-viewer-engagement-message-renderer,
   yt-live-chat-text-message-renderer yt-icon,
   yt-live-chat-renderer #input, yt-live-chat-text-message-renderer yt-live-chat-author-chip-renderer,
   yt-live-chat-subscription-message-renderer,
   yt-live-chat-paid-message-renderer,
   yt-live-chat-paid-sticker-renderer,
   yt-live-chat-restricted-participation-renderer {
       display: none !important;
   }

3. Adjust Browser Source Settings:

   • Set the width and height of the browser source to match your stream layout.
   • Ensure the "Shutdown source when not visible" option is unchecked to keep the chat connected even when switching scenes.

With the custom CSS applied, your YouTube live chat will appear as a streamlined, transparent overlay in OBS, showing only the chat messages and highlighting messages from the owner. This setup is ideal for creating an engaging and visually appealing live stream.

Feel free to fork this repository and make your own adjustments. Pull requests are welcome if you have improvements or additional features you would like to add.

This project is licensed under the MIT License. See the LICENSE file for details.

Enjoy your clean and simple YouTube live chat overlay in OBS!

You can customize the colors used for the author names and the channel owner's name in the chat overlay. Here's how to do it:

To change the color of the author names, find the following section in the styles.css file:

yt-live-chat-text-message-renderer {
    color: #fff !important;
}

Replace #fff with the desired color code. For example, to change the color to blue, you would use:

Copy code
yt-live-chat-text-message-renderer {
    color: #0000ff !important;
}

Changing the Color of the Channel Owner's Name To change the color of the channel owner's name, find the following section in the styles.css file:

Copy code
yt-live-chat-text-message-renderer.yt-live-chat-text-message-author-is-owner #author-name {
    color: #000 !important;
}

Replace #000 with the desired color code. For example, to change the color to red, you would use:

Copy code
yt-live-chat-text-message-renderer.yt-live-chat-text-message-author-is-owner #author-name {
    color: #ff0000 !important;
}