CSS

Question 1

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

Answer 1

1. Selectors

2. declarations

Question 2

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

Answer 2

using the period symbol followed by the name of the class element you want selected

Question 3

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

Answer 3

by matching the elements name

Question 4

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

Answer 4

using a hash symbol followed by the name of the id

Question 5

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

Answer 5

1. RGB Values
2. Hex Codes
3. Color Names

Question 6

What CSS properties make up the box model?

Answer 6

1. content
2. border
3. margin
4. padding

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 by the browser that is only applied in certain circumstances
• a keyword added to a selector that specifies a special state of the selected elements
• let you apply a style to an element not only in relation to the content of the doc tree but also in relation to external factors like history of the navigator (:vistor), status of its content (:checked) or the position of the mouse (:hover)

Question 10

What are CSS pseudo-classes useful for?

Answer 10

1. allow you to write less code
2. style an element when user moves over it
3. style visited and unvisited links differently

Question 11

Name at least two units of type size in CSS

Answer 11

1. pixels
2. em/rem
3. percentages

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 and take up the width of the full line.

Question 16

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

Answer 16

row - left to right

Question 17

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

Answer 17

static

Question 18

What are the four box offset properties?

Answer 18

top, bottom, left, right

Question 19

What does the transform property do?

Answer 19

CSS property that lets you rotate, scale, skew, or translate an element

Question 20

Give four examples of CSS transform functions

Answer 20

rotate ( )
translate ( )
scale ( )
skew ( )

Question 21

The transition property is shorthand for which four CSS properties?

Answer 21

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

Question 22

What are the four components of “the cascade”?

Answer 22

source order
inheritance
Specificity
!important

Question 23

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

Answer 23

• the order that your CSS rules are written in your stylesheet
• styling for an element last in your stylesheet is the styling that will ultimately take effect

Question 24

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

Answer 24

inheritance

Question 25

List the three selector types in order of increasing specificity

Answer 25

1. type selectors 2. class selectors 3. ID selectors

Question 26

Why is using !important considered bad practice?

Answer 26

makes debugging difficult by breaking the natural cascading in your stylesheets

Question 27

What is a breakpoint in responsive Web Design?

Answer 27

the points at which a media query is introduced to change the design to a better one for the space you have available.

Question 28

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 28

allows elements on your page page to change relative to their parents based on the size of the screen they are being viewed on

Question 29

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 29

css-cascade source order

Question 30

What is a breakpoint in responsive Web Design?

Answer 30

the points at which a media query is introduced to change the design to a better one for the space you have available

Question 31

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 31

allows elements on your page to change relative to their parents based on the size of the screen they are being viewed on

Question 32

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 32

css-cascade source order