The Input Field - TextMeshPro is very similar to the UI Input Field. When added to the scene, you’ll see it looks nearly identical, except that the placeholder text has a different font. The UI Input Field uses an Arial font by default, while the Input Field - TextMeshPro uses Liberation Sans.

To create a UI Input Field, select + | UI | Input Field - TextMeshPro. By default, Input Field - TextMeshPro GameObject has a child named Text Area, which has two children: a Placeholder and a Text object. You will observe that it is slightly different in setup than the UI Input Field.

The Text Area GameObject contains a Rect Transform component and a Rect Mask 2D component. The Text Area ensures that the text does not appear outside of a specified area, as shown by the highlighted area in the following image. If you wanted to change the size of this area, you would change the properties on the Rect Transform component:

Figure...