Which CSS unit is based on the font size of the root element?
A). A) em
B). B) px
C). C) %
D). D) vw
What does the CSS property 'display: none;' do?
A). A) Hides the element but reserves its space
B). B) Hides the element and removes its space
C). C) Shows the element
D). D) Displays the element with reduced opacity
Which CSS property is used to control the spacing between lines of text?
A). A) line-height
B). B) text-spacing
C). C) line-spacing
D). D) spacing
Which CSS property is used to align text within its container horizontally?
A). A) text-align
B). B) align-text
C). C) text-justify
D). D) justify-text
What is the purpose of the CSS box model?
A). A) To provide a graphical representation of CSS rules
B). B) To define the layout and design of a webpage
C). C) To control the appearance of text
D). D) To specify the padding and border of an element
Which of the following is NOT a valid CSS selector?
A). A) #myDiv .class
B). B) 1stParagraph
C). C) .myClass > p
D). D) p + span
Which CSS property is used to add shadows to elements?
A). A) box-shadow
B). B) shadow
C). C) text-shadow
D). D) element-shadow
Which CSS property is used to specify the background color of an element?
A). A) background-color
B). B) background
C). C) color
D). D) background-style
What does the CSS property 'position: fixed;' do?
A). A) Positions the element relative to its parent
B). B) Positions the element relative to the viewport
C). C) Positions the element absolutely
D). D) Positions the element relative to the document flow
Which CSS property is used to control the size of an element relative to its containing element?
A). A) width
B). B) size
C). C) scale
D). D) zoom