styles_controller.rb

def update
    respond_to do |format|
      if @style.update(style_params)
        format.html { redirect_to styles_url, notice: "Style was successfully updated." } # Cambió el redirect_to
        format.json { render :show, status: :ok, location: @style }
      else
        #Agrego esta linea
        format.turbo_stream { render turbo_stream: turbo_stream.replace(@style, partial: "styles/form", locals: { style: @style}) }
        format.html { render :edit, status: :unprocessable_entity }
        format.json { render json: @style.errors, status: :unprocessable_entity }
      end
    end
  end