Mastering CSS Class Selectors

What is the general format for a CSS rule?

• Class name followed by square brackets and tag names inside.

• Tag name followed by curly braces and class names inside.

• Selector followed by curly braces and declarations inside.

• Selector followed by parentheses and declarations inside.

What attribute do you use to assign a class to an HTML element?

• type

• class

• style

• id

How do you select HTML elements by class in CSS?

• Using the tag name followed by the class name.

• Using the class name directly without any symbol.

• Using the . symbol followed by the class name.

• Using the # symbol followed by the class name.

What does the period (.) symbol signify in CSS?

• It indicates a class selector.

• It indicates a pseudo-class.

• It indicates an ID selector.

• It indicates a tag selector.

How can you make a CSS rule apply only to

tags with a specific class?

• By using the class name followed by the

  tag.

• By using the # symbol followed by the class name within

  tags.

• By using the

  tag followed by the . symbol and the class name.

• By using the class name directly within

  tags.

How can you increase the specificity of a CSS rule?

• By using the !important declaration.

• By combining tag and class selectors.

• By adding more classes to the rule.

• By writing the rule at the bottom of the CSS file.

Can a single HTML element have multiple classes?

• No, an HTML element must have a unique class.

• Yes, by separating class names with commas.

• No, an HTML element can only have one class.

• Yes, by separating class names with spaces.

Which of the following is a valid class name?

• class name

• 1classname

• classname!

• class-name

What must class names not start with?

• A letter

• A dash

• A number

• An underscore

What happens when an HTML element has a class that has a CSS rule defining the color red, but there's also a general rule setting the color to blue?

• The element will be red because class-based rules take precedence.

• The element will be purple as a mix of red and blue.

• The element will be blue because general rules take precedence.

• The element will have no color because of the conflict.