CSS (Cascading Style Sheets)

Question 1

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

Answer 1

Selector, Declaration Block, Declaration (which contain property and value)

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

the name

Question 4

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

Answer 4

#

Question 5

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

Answer 5

rgb values, hex code, and color name (most common 3)

Question 6

What CSS properties make up the box model?

Answer 6

Padding, Border, 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 by browser under certain circumstances

Question 10

What are CSS pseudo-classes useful for?

Answer 10

Applied styling as a result of user interaction

Question 11

Name at least two units of type size in CSS.

Answer 11

rem, px, %, pt

Question 12

What is the default flex-direction of a flex container?

Answer 12

row - left to right

Question 13

What is the default flex-wrap of a flex container?

Answer 13

nowrap

Question 14

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

Answer 14

They are block elements

Question 15

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

Answer 15

row - left to right

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 affects its normal document flow

Question 18

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

Answer 18

It stays in the same location

Question 19

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

Answer 19

Disrupts normal flow and does not affect the position of other elements on the page (they act like it’s not there)

Question 20

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

Answer 20

It will inherit it’s ancestor’s position

Question 21

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

Answer 21

Set its position value to anything but static

Question 22

What are the four box offset properties?

Answer 22

Top, Bottom, Left, Right

Question 23

What are the four components of “the Cascade”.

Answer 23

Source Order, Specificity, Inheritance, !important

Question 24

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

Answer 24

The styling that comes lower in your stylesheet will take effect over the styling that is higher.

Question 25

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

Answer 25

Inheritance

Question 26

List the three selector types in order of increasing specificity.

Answer 26

element –> class –> ID

Question 27

Why is using !important considered bad practice?

Answer 27

It makes it more difficult to debug later on. There has to be a good reason why it’s being utilized.

Question 28

What does the transform property do?

Answer 28

Property that lets you rotate, scale, skew, or translate an element.

Question 29

Give four examples of CSS transform functions.

Answer 29

Scale, rotate, translate, matrix

Question 30

The transition property is shorthand for which four CSS properties?

Answer 30

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

Question 31

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

Answer 31

min-width and max-width

Question 32

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

Answer 32

viewport meta tag

Question 33

What is a breakpoint in responsive Web design?

Answer 33

The point where new styling is being applied

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

Much more flexible, maintainable, and easy to use

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