Which is true about the `px` unit for font-size?

The px unit appears exactly the same size on every device

Which CSS rules are "commented out?"

Paragraph rules are commented out

Why are hexidecimal (HEX) values used to assign colors in CSS?

Millions of color options are available using HEX values.

What is special about the `em` font-size unit? as shown?

Em units will style font relative to screen size

Describe the effect of this CSS rule:

Makes all paragraph text gray and 18px large

A language used to style HTML elements

When should you use a class selector?

To select many elements that should receive the same styling

Complete the following sentence: "If HTML were a tree..."

The trunk is - first branches are and

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Answers

1
Which is true about the `px` unit for font-size?
The px unit appears exactly the same size on every device
The px unit appears relative to screen size
The px unit can be used with any selector
The px and em units should be used interchangeably
2
Why would you use "id" rather than "class"?
All of these are correct
To single out an element from others like it
To select one element for special treatment
To give an element a unique style
3
Which CSS would select a class named question?
#question
.question
*question
$question
4
How are the p and div related in this code sample?
The p and div are siblings
The div is the child of the p
None of these are correct
The div is the parent of the p
5
What does this tag do?
Links to a library called "text/css"
Links to selectors in a "stylesheet" database
Enables inline CSS to work in your document
Links to an external CSS file
6
Which CSS rules are "commented out?"
Paragraph rules are commented out
All the rules are commented out
The h1 and paragraph rules are commented out
The h1 elements are commented out
7
Which CSS selector will select any list item within a div?
div li
div * li
div > li
* div li
8
Which selectors in this code sample are siblings?
The first p and the div
All of these are correct
All three list items
The inner p and the ul element
9
Why are hexidecimal (HEX) values used to assign colors in CSS?
Named color values (ex: gray) should not be used in CSS.
Millions of color options are available using HEX values.
All of these are correct
HEX values are easier for programmers to read.
10
Why use an "external" CSS file?
To access more HTML elements
To avoid rewriting code
To enable adding HTML to the CSS file
To style multiple HTML pages from a single CSS file
11
What is special about the `em` font-size unit? as shown?
Em units are the same as px units
Em units are used for anchor tag selectors only
Em units will not work on all screen sizes
Em units will style font relative to screen size
12
Describe the effect of this CSS rule:
Makes all divs of the p class gray and 18px large
Makes punctuation marks gray and 18px large
Makes paragraph text 18px large and background color gray
Makes all paragraph text gray and 18px large
13
What is CSS?
Acronym for "colorful style sheets"
A markup language used as a substitute for HTML
A web browser
A language used to style HTML elements
14
When should you use a class selector?
To select many elements that should receive the same styling
To select and style all elements in a document
You should never use class selectors in CSS
To select just a single HTML element to style
15
Which property/value would give table data elements a 2px-thick dashed blue border?
border: 2px dashed blue;
td-border: 2px dashed blue;
border: 2px-thick dashed blue;
table-border:2pz dashed blue;
16
Which pseudo-class selects text when the mouse is directly over it?
active
link
hover
visited
17
Complete the following sentence: "If HTML were a tree..."
The trunk is <html> - first branches are <head> and <body>
The trunk is <body>- first branches are <div> and <p>
Trunk is <!DOCTYPE html>first branches are <html> and <body>
The trunk is <p>- first branches are <title> and <div>
18
Which CSS selector will select only list items that are direct children of a div?
All of these are correct
div > li
div li
div > ul > li
19
Which CSS would select an ID named first?
#first
.first
$first
*first
20
Below, which part of the syntax is called the `selector`?
None of these
color
#cc0000
a
21
To create a square-shaped div, which CSS properties would you change?
Shape and tallness
Background and size
Width and height
Thickness and shape

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