Function toFitContainer

Asserts that the target element fits entirely within the bounds of the specified container element. The check ensures that all sides of the target element (top, bottom, left, right) are strictly within the bounds of the container, with no partial overlap allowed.

• Perfect Fit (Pass):

┌─────────────────────┐
│┌───────────────────┐│
││                   ││
││      Element      ││
││   (Perfect Fit)   ││
││                   ││
│└───────────────────┘│
└─────────────────────┘
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• Position Mismatch (Fail):

┌──────────────────────┐
│                      │
│ ┌──────────────────┐ │
│ │     Element      │ │
│ │ (Wrong Position) │ │
│ └──────────────────┘ │
└──────────────────────┘
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• Size Mismatch (Fail):

┌─────────────────────┐
│   ┌─────────────┐   │
│   │   Element   │   │
│   │ (Too Small) │   │
│   └─────────────┘   │
└─────────────────────┘
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• Overflow (Fail):

┌─────────────────────┐
│┌────────────────────┼─┐
││       Element      │ │
││      (Overflow)    │ │
│└────────────────────┼─┘
└─────────────────────┘
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