CSS

Question 1

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

Answer 1

CSS selector, declaration block, properties, values

Question 2

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

Answer 2

’.’

Question 3

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

Answer 3

Use its name

Question 4

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

Answer 4

Use a ‘#’

Question 5

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

Answer 5

keyword, rgb function, hex representation

Question 6

What CSS properties make up the box model?

Answer 6

margin, border, padding, width, height

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

A special state of an element

Question 10

What are CSS pseudo-classes useful for?

Answer 10

Highlighting an element when the user interacts with it

Question 11

Name at least two units of type size in CSS.

Answer 11

px, rem

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 elements.

Question 16

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

Answer 16

left to right

Question 17

What are the four components of “the Cascade”?

Answer 17

source order, specificity, inheritance, important

Question 18

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

Answer 18

Last rule of the same specificity gets applied.

Question 19

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

Answer 19

inheritance

Question 20

List the three selector types in order of increasing specificity.

Answer 20

type, class, id

Question 21

Why is using !important considered bad practice?

Answer 21

Goes against the grain of cascade. Makes rules hard to reuse.

Question 22

What does the transform property do?

Answer 22

Rotates, scales, skews, or translates an element

Question 23

Give four examples of CSS transform functions.

Answer 23

matrix, rotate, scale, skew

Question 24

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

Answer 24

width, min-width, max-width

Question 25

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

Answer 25

name =”viewport” content=”width-device-width, initial-scale=1.0”

Question 26

What is a breakpoint in responsive Web design?

Answer 26

The point where it breaks to a new form of styling to accommodate varying screen size.

Question 27

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 27

Percentage will adjust as the screen width changes

Question 28

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 28

The one that’s lower will take effect because of source order.