Question:
Recently, a developer questioned the seemingly conflicting statements in the CSS Flexible Box Layout Module Level 1 about the nature of flex items. Chapter 4 initially asserts that flex items belong to the flex level, not the block level. However, a later section mentions that the flex item's display value becomes "blockified." Does this imply that flex items are in fact block-level elements?
Answer:
No, flex items remain non-block-level elements despite the "blockification" process. The key to understanding this is to recognize that each element has a display property, and for flex items, this property is set to block by default. However, if a developer explicitly specifies a different display value, such as inline-block or inline-grid, it will override the default block setting.
To clarify:
To simplify this concept, consider a flex item as existing in both an outer world (the flex container) and an inner world (its content). In the outer world, the flex item behaves as a flex-level box, whereas in the inner world, it presents itself as a block element for its nested content.
In conclusion, flex items are not block-level elements despite their ability to display block-like behavior due to the blockified display value. They remain distinct entities within the flexbox layout system.
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