Which of the following CSS blocks results in this blue div:

Question

BlackTom AI · Accepted Answer

We start by restating the task: identify which CSS block produces a blue div matching the given dimensions and styling.
Option 1 declares: div { width: 200px; height: 150px; padding: 50px; margin: 50px; border: 2px solid blue; background-color: CornflowerBlue; }
With the default box-sizing: content-box, padding adds to the width and height. The total rendered box would be: outer width = 200px + 2*50px padding + 2*2px border = 200 + 100 + 4 = 304px, outer height = 150px + 2*50px padding + 2*2px border = 150 + 100 + 4 = 254px. That does not match the target 200x150 plus padding appears inside, so this option cannot produce the shown blue rectangle.
Option 2 uses width 150px and height 100px with padding 50px, border 2px, etc. Under content-box, the outer dimensions would again far exceed the 200x150 look, and the overall shape would not align with the provided image. The mismatch in overall size makes this option unlikely to produce the desired result.
Option 3 specifies box-sizing: border-box but width: 100px and height: 50px with padding 50px. Border-box means the specified width and height include padding and border, so the total outer size would be exactly 100x50 plus the border influence. Since padding is 50px on each side, the content area would shrink accordingly, and the outer dimension would not equal 200x150. Therefore this would not render the shown blue rectangle.
Option 4 uses width: 96px and height: 46px with padding: 50px, and box-sizing not specified (default content-box). The large padding would blow up the outer dimensions well beyond 200x150, so it does not match the target.
Option 5 mirrors Option 1 but adds box-sizing: border-box: div { width: 200px; height: 150px; padding: 50px; margin: 50px; border: 2px solid blue; background-color: CornflowerBlue; box-sizing: border-box } With border-box, the specified width and height include padding and border. Thus the total rendered outer size remains 200px by 150px, even though padding is 50px on each side. The background-color applies to the padding area as well, so the blue fills the entire 200x150 area, matching the provided image. The border remains outside this area, but it does not change the outer dimensions since the size is border-box.
Option 6 uses width: 150px; height: 100px; padding: 50px; and box-sizing: border-box. Even with border-box, the outer size is constrained to 150x100, so adding 50px padding would not result in a 200x150 rectangle. This would produce a smaller box than the target.
In summary, the only block that preserves the exact outer dimensions shown (200px by 150px) while applying padding and border consistently and having the blue fill the entire area is the one with box-sizing: border-box and the 200×150 width/height. The alternatives fail because their outer dimensions no longer match the target due to how padding and box sizing interact with content-box versus border-box models.

4510_COMP_SCI_X_0019 Quiz 2

Which of the following CSS blocks results in this blue div:

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