# Popup ### Create Surface Constructor [#create-surface-constructor] Go to the **`public/index.html`** file in your React.js project and add the following code at the end of **``** tag: ```html ``` ## Add className to the target element [#add-classname-to-the-target-element] Add **`surface-form-button`** class to the HTML element if you want to show the form as a popup. ```jsx ```