CSS

Question 1

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

Answer 1

• Selector (element, class or id)
• Declaration Block
• Property & Value (declaration)

Question 2

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

Answer 2

.classname{ }

Question 3

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

Answer 3

elementname { }

Question 4

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

Answer 4

idname { }

Question 5

What CSS properties make up the box model?

Answer 5

• Border
• Padding
• Margin

Question 6

Which CSS property pushes boxes away from each other?

Answer 6

Margin

Question 7

Which CSS property add space between a box’s content and its border?

Answer 7

Padding

Question 8

What is a pseudo-class?

Answer 8

A class applied to an element by the browser in a certain situation

Question 9

What are CSS pseudo-classes useful for?

Answer 9

To make the website stylistically dynamic based on user interaction

Question 10

Name at least two units of type size in CSS.

Answer 10

• px
• %
• em - default font size from container
• rem - default font size from doc root

Question 11

What CSS property controls the font used for the text inside an element?

Answer 11

font-family

Question 12

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

Answer 12

flex-direction: row;

Question 13

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

Answer 13

flex-wrap: nowrap;

Question 14

Which axis does the justify-content property apply to?

Answer 14

main-axis (default is x-axis)

Question 15

Which axis does align-content property apply to?

Answer 15

cross-axis (default is y-axis)

Question 16

What is the difference between align-content and align-item?

Answer 16

• align-content applies changes to multiple rows
• align-item applies changes to the items within a
  single row

Question 17

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

Answer 17

Block level elements like div will take 100% width, so they naturally stack

Question 18

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

Answer 18

flex-direction: row

Question 19

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

Answer 19

position: static

Question 20

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

Answer 20

• Relative elements remain in the document flow
• If moved it will still occupy (space wise) the
  original spot it was in

Question 21

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

Answer 21

The new position is relative to where it’s block would have been

Question 22

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

Answer 22

It takes the element out of the normal document flow

Question 23

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

Answer 23

It moves the element based on the first non-static parent element

Question 24

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

Answer 24

• position: relative on the containing block

- position: absolute on the desired elements

Question 25

What are the four box offset properties?

Answer 25

• top
• bottom
• left
• right

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

Last ruleset will be applied if there are multiple rulesets targeting the same property and value

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

If the style being applied to the parent element is an inheriting property

Question 29

List the three selector types in order of increasing specificity.

Answer 29

• Type selector
• Class selector
• ID selector

Question 30

Why is using !important considered bad practice?

Answer 30

Makes debugging more difficult by breaking the natural cascading in your stylesheets

Question 31

What does the transform property do?

Answer 31

Transform moves the element on it’s x and y axis

Question 32

Give four examples of CSS transform functions.

Answer 32

• matrix()
• rotate()
• scale()
• skew()
• translate()

Question 33

The transition property is shorthand for which four CSS properties?

Answer 33

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

transition: margin-right 2s ease-in 0.5s