# Breaking changes **Edit this Page** [![N|Solid](./img/GitHub-Mark-32px.png)](https://github.com/mermaid-js/mermaid/blob/develop/docs/breakingChanges.md) ### Breaking changes from history version to latest version: ## #1 ```javascript mermaid.initialize({ sequenceDiagram:{ ... } }) ``` has been changed to ```javascript mermaid.initialize({ sequence:{ ... } }) ``` ## #2 In old versions you need to add CSS file to your HTML: ```html ``` or ```html ``` Now it is not needed to do so. And there are no more CSS files in distrubtion files. You just ```javascript mermaid.initialize({ theme: 'forest' }) ``` and it works like a charm. This is because now the CSS is inline with SVG for portability.