CSS

Question 1

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

Answer 1

selector, declaration block, property, values.

Question 2

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

Answer 2

With a dot at the beginning.

Question 3

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

Answer 3

name of the element

Question 4

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

Answer 4

With a # (pound sign or hash) at the beginning.

Question 5

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

Answer 5

RGB, Hex codes, color name.

Question 6

What CSS properties make up the box model?

Answer 6

Content, borders, margins, and padding.

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 CSS pseudo-class is a keyword added to a selector that specifies a special state of the selected element(s).

Question 10

What are CSS pseudo-classes useful for?

Answer 10

Add special effects to some selectors.

Question 11

Name two types of units that can be used to adjust font-size in CSS

Answer 11

pixels, percentages, ems

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

A 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 value for the position property of HTML elements?

Answer 16

Static

Question 17

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

Answer 17

It doesn’t affect.

Question 18

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

Answer 18

Making the container other position than static.

Question 19

What are the four box offset properties?

Answer 19

Left, right, top, bottom.

Question 20

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

Answer 20

Inheritance is the process by which certain CSS properties on a child HTML element can receive value from a parent element, if no CSS for that property is directly declared on the child element.

Question 21

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

Answer 21

If you have more than one rule for an element, and all of them have exactly the same weight, so the last rule will win.

Question 22

What are the four components of “the Cascade”.?

Answer 22

1. • Source order
2. • Inheritance
3. • Specificity
4. • !important

Question 23

List the three selector types in order of increasing specificity.

Answer 23

1. • Type selector
2. • Class selector
3. • Id selector

Question 24

Why is using !important considered bad practice?

Answer 24

Because you wouldn’t be respect the cascade properly. You would be overwriting and messing with the specificity.

Question 25

Give four examples of CSS transform functions.

Answer 25

Matrix, translate, scale, rotate, skew.

Question 26

What does the transform property do?

Answer 26

Lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of the CSS visual formatting model.

Question 27

The transition property is shorthand for which four CSS properties?

Answer 27

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

Question 28

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

Answer 28

width

height

Question 29

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

Answer 29

width

height

Question 30

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

Answer 30

Viewport meta tag.

Question 31

What is a breakpoint in responsive Web design?

Answer 31

The points at which a media query is introduced

a point at which the layout will change

Question 32

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 32

It allows the web pages to be responsive rather than adaptive. The element will grow/shrink as the screen will grow/shrink.
Percentages can scale while pixels will always stay the same size.

Question 33

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 33

cascade/source order