Why Doesn't Margin-Top Affect Inline Elements in Firefox?
Margin Top Ineffectiveness in Inline Firefox Elements
You may wonder why setting the margin top property has no effect on inline elements in Firefox. It is essential to clarify that this behavior is not exclusive to Firefox but is defined as part of the CSS 2.1 specification.
According to the CSS 2.1 Specification, margin-related properties determine the width of an element's margin area. While they generally apply to all elements, vertical margins, such as margin-top, have no impact on non-replaced inline elements.
This means that if you apply a margin-top style to a
or element, which are considered inline elements, they will ignore the margin-top setting and render without any vertical margin space.
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