> For the complete documentation index, see [llms.txt](https://docs.elsaworkflows.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.elsaworkflows.io/studio/design/workflow-editor-3.5-preview.md).
# Workflow Editor (3.5-preview)
As of version 3.5.0, the default workflow editor got a minor UI refresh.
However, if you prefer the previous look, change the following in your Blazor projects Program.cs:
```csharp
builder.Services.AddServerSideBlazor(options =>
{
// Comment out the V2 activity wrapper (default).
//options.RootComponents.RegisterCustomElsaStudioElements();
// To use V1 activity wrapper layout, specify the V1 component instead:
options.RootComponents.RegisterCustomElsaStudioElements(typeof(Elsa.Studio.Workflows.Designer.Components.ActivityWrappers.V1.EmbeddedActivityWrapper));
options.RootComponents.MaxJSRootComponents = 1000;
});
// Add this for the V1 designer theme (default is V2).
builder.Services.Configure(options =>
{
options.DesignerCssClass = "elsa-flowchart-diagram-designer-v1";
options.GraphSettings.Grid.Type = "mesh";
});
```
In the \_Host.cshtml file (or index.html in case of WebAssembly), in he `` element:
```cshtml
@* Comment out the V2 designer.css. *@
@* *@
@* To use designer.v1.css for the old designer. *@
```
You should now have the old design back.