CSS

Question 1

What are the names of the individual pieces of a CSS rule?

Answer 1

Selectors and declaration blocks.

Question 2

In CSS, how do you select elements by their class attribute?

Answer 2

.class

Question 3

In CSS, how do you select elements by their type?

Answer 3

Just type the element name.

Question 4

In CSS, how do you select an element by its id attribute?

Answer 4

[hashtag] id

Question 5

Name three different types of values you can use to specify colors in CSS.

Answer 5

RGB values, hex codes, and color names.

Question 6

What CSS properties make up the box model?

Answer 6

Content, padding, border, and margin.

Question 7

Which CSS property pushes boxes away from each other?

Answer 7

Margin

Question 8

Which CSS property adds space between a box’s content and its border?

Answer 8

Padding

Question 9

What is a pseudo-class?

Answer 9

Class applied to an element under a certain circumstance.

Question 10

What are CSS pseudo-classes useful for?

Answer 10

Giving styling to elements based on user actions.

Question 11

Name at least two units of type size in CSS.

Answer 11

px, pt, pc, rem, and em

Question 12

What CSS property controls the font used for the text inside an element?

Answer 12

font-family:

Question 13

What is the default flex-direction of a flex container?

Answer 13

row

Question 14

What is the default flex-wrap of a flex container?

Answer 14

nowrap

Question 15

Why do two div elements “vertically stack” on one another by default?

Answer 15

Because divs are block elements.

Question 16

What is the default flex-direction of an element with display: flex?

Answer 16

row

Question 17

What is the default value for the position property of HTML elements?

Answer 17

static

Question 18

How does setting position: relative on an element affect document flow?

Answer 18

Document flow is unaffected.

Question 19

How does setting position: relative on an element affect where it appears on the page?

Answer 19

The element appears relative to where it would have been static.

Question 20

How does setting position: absolute on an element affect document flow?

Answer 20

It removes the element from the document flow and the space it would’ve taken up is ignored by other elements.

Question 21

How does setting position: absolute on an element affect where it appears on the page?

Answer 21

The element appears where specified within the borders of the first non-static ancestor element.

Question 22

How do you constrain an absolutely positioned element to a containing block?

Answer 22

Make the container non-static.

Question 23

What are the four box offset properties?

Answer 23

Top, right, bottom, left.

Question 24

What are the four components of “the Cascade”.

Answer 24

Source order, inheritance, specificity, and !important.

Question 25

What does the term “source order” mean with respect to CSS?

Answer 25

The order that CSS rules are written in the stylesheet.

Question 26

How is it possible for the styles of an element to be applied to its children as well without an additional CSS rule?

Answer 26

Styles of the element will be inherited by its children if its an automatically inheritable property like color.

Question 27

List the three selector types in order of increasing specificity.

Answer 27

Type, class, and ID selectors.

Question 28

Why is using !important considered bad practice?

Answer 28

It breaks the natural cascading and makes debugging harder.

Question 29

What does the transform property do?

Answer 29

It allows you to rotate, scale, skew, or translate an element.

Question 30

Give four examples of CSS transform functions.

Answer 30

skew(), rotate(), scale(), translateX(), translateY(), matrix()

Question 31

The transition property is shorthand for which four CSS properties?

Answer 31

transition-delay, transition-property, transition-duration, transition-timing-function

Question 32

Give two examples of media features that you can query in an @media rule.

Answer 32

min-width and max-width

Question 33

What are CSS properties which let you set the value of multiple properties at once?

Answer 33

Shorthand properties.

Question 34

What is a breakpoint in responsive Web design?

Answer 34

The “point” usually in the width at which the page will adjust the layout of the content to make it easier for the user to view and interact with.

Question 35

What is the advantage of using a percentage (e.g. 50%) width instead of a fixed (e.g. px) width for a “column” class in a responsive layout?

Answer 35

It will work for viewports of a range of different sizes.

Question 36

If you introduce CSS rules for a smaller min-width after the styles for a larger min-width in your style sheet, the CSS rules for the smaller min-width will “win” (css-responsive-layout exercise). Why is that?

Answer 36

Source order.