CSS

Question 1

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

Answer 1

selector, declaration (property-value)

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

element {}

Question 4

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

Answer 4

id

Question 5

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

Answer 5

rgb values, hex codes, color names

Question 6

What CSS properties make up the box model?

Answer 6

margins, borders, padding, and the actual content

Question 7

Which CSS property pushes boxes away from each other?

Answer 7

margins

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

keyword added to a selector that specifies a special state of the selected element

Question 10

What are CSS pseudo-classes useful for?

Answer 10

:hover can be used to change a button’s color when the user’s pointer hovers over it

Question 11

Name at least two units of type size in CSS.

Answer 11

absolute : px

relative: em, 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

no wrap

Question 15

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

Answer 15

they 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

normal

Question 19

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

Answer 19

same location

Question 20

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

Answer 20

removed from flow

Question 21

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

Answer 21

relative to a non-static ancestor

Question 22

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

Answer 22

set the containing block to non-static

Question 23

What does the transform property do?

Answer 23

adjust how elements are shown in the coordinate plane

Question 24

Give four examples of CSS transform functions.

Answer 24

translate, scale, rotate, skew

Question 25

The transition property is shorthand for which four CSS properties?

Answer 25

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

Question 26

What are the four components of "the Cascade".

Answer 26

source order, inheritance, specificity, !important

Question 27

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

Answer 27

order the code is written

Question 28

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

Answer 28

inheritance

Question 29

List the three selector types in order of increasing specificity.

Answer 29

element < class < id

Question 30

Why is using !important considered bad practice?

Answer 30

overrides specificity which is vital in the cascade

Question 31

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

Answer 31

min-width, max-width

Question 32

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

Answer 32

HTML Viewport meta tag | < meta name=”viewport” content=”width=device-width, initial-scale=1.0” >

Question 33

What is a breakpoint in responsive Web design?

Answer 33

point at which browser changes styling

Question 34

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 34

if you change the parent row, the column scales accordingly

Question 35

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 35

source order and overwrites the other @ rule