CSS

Question 1

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

Answer 1

Selector and Declaration (made of property:value pair)

Question 2

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

Answer 2

. (dot) followed by the class name

Question 3

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

Answer 3

With the element name

Question 4

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

Answer 4

(hash) followed by id name

Question 5

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

Answer 5

HEX code, RBG values, color names

Question 6

What CSS properties make up the box model?

Answer 6

Content (with a width and height), padding, border and margin

Question 7

Which CSS property pushes boxes away from each other?

Answer 7

Margin

Question 8

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

Answer 8

Padding

Question 9

What is a pseudo-class?

Answer 9

Classes applied to elements in a specific state

Question 10

What are CSS pseudo-classes useful for?

Answer 10

They are useful when styling elements based on a certain situation (event based styling)

Question 11

Name at least two units of type size in CSS

Answer 11

Pixel, percentage, 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 they are block level 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

It doesn’t - everything still flows normally

Question 19

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

Answer 19

It moves the element in relation to where it would have been in the normal flow

Question 20

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

Answer 20

The element gets removed from document flow.

Question 21

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

Answer 21

The element gets placed within its nearest non-static ancestor element (an ancestor with a relative position)

Question 22

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

Answer 22

The parent element has to be set to position:relative

Question 23

What are the four box offset properties?

Answer 23

Top, bottom, left, right

Question 24

What are the four components of “the Cascade”?

Answer 24

o Order
o Inheritance
o Specificity
o !important

Question 25

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

Answer 25

The order that your CSS rules are written in your sheet, where the lowest CSS ruleset supersedes the ones above

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

Through inheritance (child elements receiving value from parent element)

Question 27

List the three selector types in order of increasing specificity.

Answer 27

Type < class < id

Question 28

Why is using !important considered bad practice?

Answer 28

It makes debugging more difficult by breaking the natural cascade in your stylesheet

Question 29

What does the transform property do?

Answer 29

Modifies the coordinate space of CSS

Question 30

Give four examples of CSS transform functions:

Answer 30

Rotate
Scale
Skew
Translate

Question 31

The transition property is shorthand for which four CSS properties?

Answer 31

o Transition-property
o Transition-duration
o Transition-timing-function
o Transition-delay

Question 32

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

Answer 32

o min-width

o max-width

Question 33

Which HTML meta tag is used in mobile-responsive web pages?

Answer 33

meta name=”viewport” content=”width=device-width, initial-scale=1”

Question 34

What is a breakpoint in responsive Web design?

Answer 34

The point at where the styling changes (where the media query takes place)

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

So as your viewport width changes, the calculations can adjust

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”. Why is that?

Answer 36

Because of the source order