.blue is an example of a ________.

Question

BlackTom AI · Accepted Answer

To begin, let's parse the prompt: '.blue is an example of a ________.' The ellipsis invites us to identify what .blue represents in common web styling contexts.
Option 1: class. In CSS, a leading dot denotes a class selector, so .blue selects all elements that have class="blue". This matches exactly what a dot-prefixed name signifies in CSS syntax.
Option 2: ID. An ID selector uses a leading hash (#), as in #blue, not a dot. Therefore, this option describes something different from .blue and is incorrect for this example.
Option 3: style. The word style would refer to an attribute or element related to inline styling or to a style tag, but .blue is not an HTML attribute or a style property; it is a selector, not the word style itself. Hence this is not accurate.
Option 4: font-family. This is a CSS property used inside a rule to specify the typeface, such as font-family: Arial;. It is a property, not a selector, so it does not describe what .blue is in CSS.
In summary, the dot-prefixed name clearly signals a class selector in CSS, while the other options point to different concepts (ID selectors, styling attributes, or a property) that do not match the given string. The structure and semantics of CSS selectors are what make .blue a class selector rather than any of the other possibilities.

IWBS001 CSS Practice Quiz

.blue is an example of a ________.

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