.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.

.blue is an example of a ________.单项选择题

类似问题

In which security measure will you find anti-virus software?

What are user permissions?

Which security measure will stop someone reading your messages if they find your smart phone?

On a network a firewall

What is the name for emails that are sent to users, pretending to be from their bank and asking for username and password?

To stop users of a network from playing games all day instead of working, which would be the best security measure to use?

Which of the following security threats is the cause of the greatest amount of data loss?

A person who accesses a network by walking through an unlocked door is known as

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单