> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## Tab alignment and placement options customization, docs.yml You can now finetune how your tabs look and behave using `theme.tabs` in `docs.yml`. Choose between the default underline or bubble style, place tabs in the header or sidebar, and center-align header tabs from a single configuration block. **`docs.yml`** ```yaml docs.yml theme: tabs: style: bubble alignment: center placement: header ``` The existing string shorthand (e.g., `theme.tabs: bubble`) continues to work for simple style changes. Read the docs