CSS

Question 1

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

Answer 1

selector {property: value;
}
declaration block

Question 2

How do you select elements by their class attribute?

Answer 2

.class { }

Question 3

How do you select elements by their type?

Answer 3

element-name { }

Question 4

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
Hex code
color name

Question 6

What CSS properties make up the box model?

Answer 6

Content, padding, border, margin

Question 7

Which CSS property pushes boxes away from each other?

Answer 7

margin

Question 8

Which CSS property adds spaces between a box’s content and its border?

Answer 8

padding

Question 9

What is a pseudo-class?

Answer 9

keyword added to selector that specifies a special state of selected elements

notated by a colon

Question 10

What are pseudo-classes useful for?

Answer 10

can style specific states of the selector such as when the user hovers, clicks, etc

Question 11

Name at least 2 units of type size in CSS.

Answer 11

pixels, rem, ems, %, etc

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

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

element can be offset from their normal position with no effect on other elements

Question 19

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

Answer 19

the element can be offset from its normal position using top, bottom, left, right

Question 20

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

Answer 20

The other elements act as if it doesn’t exist

Question 21

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

Answer 21

The element will sit on its own layer and is positioned relative to its nearest positioned ancestor (not static ancestor) otherwise, the initial containing block

Question 22

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

Answer 22

set the containing block’s position to non-static

Question 23

What are the four box offset properties?

Answer 23

top, bottom, left, right

Question 24

What are the four components of “the Cascade”?

Answer 24

Source order, inheritance, specificity, !important

Question 25

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

Answer 25

The order that your CSS rules are written in the stylesheet.

The styling provided by the last rule takes precedence

Question 26

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

Answer 26

through inheritance

Question 27

List the 3 selector types in order of increasing specificity

Answer 27

element < class < ID

Question 28

Why is using !important considered bad practice?

Answer 28

Makes debugging more difficult by breaking the natural cascade of stylesheet

It is better to consider ways to use specificity

Question 29

What does the transform property do?

Answer 29

Lets you rotate, scale, skew or translate an element

Question 30

Give four examples of CSS transform functions

Answer 30

scale
rotate
translate
skew
matrix

Question 31

The transition property is shorthand for which four CSS properties?

Answer 31

property, duration, timing function, delay

Question 32

What is a breakpoint in responsive Web Design?

Answer 32

The points at which layout will break so need to introduce a media rule at that point to prevent it

Question 33

What is the advantage of using a percentage width instead of a fixed width for a “column” class in a responsive layout?

Answer 33

The ratio of the items displayed on the screen will be preserved using percentage

Question 34

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 34

Because of source order