When programming with [[SwiftUI]], we have to understand that **the order in which we apply modifiers to [[SwiftUI Views|views]] does matter**. [[SwiftUI Views|Views]] are immutable, so a new view is created when the modifier is applied (there is no in-place modification). Below there is an example of wrong and correct behaviour because of this: ```swift Button("Hello, world!") { // do nothing } .background(.red) .frame(width: 200, height: 200) ``` This code will generate a 200x200 button that contains a small red rectangle surrounding the text. The red rectangle is not 200x200 because it was generated before the size modification. We can find the code that generates the expected result below. ```swift Button("Hello, world!") { // do nothing } .frame(width: 200, height: 200) .background(.red) ``` This is, however, not exactly how [[SwiftUI]] works - it is just a helpful mental framework to understand certain results.