CSS

Question 1

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

Answer 1

Selector, declaration block (property, value)

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

element name

Question 4

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

Answer 4

idName

Question 5

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

Answer 5

RGB Values, Hex Code, Color Name

Question 6

What CSS properties make up the box model?

Answer 6

Border, Margin, 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

Classes applied by the browser in certain circumstances.

Question 10

What are CSS pseudo-classes useful for?

Answer 10

Adding style to an element based on user behavior.

Question 11

Name at least two units of type size in CSS.

Answer 11

Rem, Em, Px, %

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

No-wrap

Question 15

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

Answer 15

Div elements are block level 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

It does not

Question 19

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

Answer 19

Starts at original position and shifts to top, bottom, left, or right of where it would have been placed.

Question 20

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

Answer 20

Gets removed from document flow

Question 21

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

Answer 21

Goes to first non static element.

Question 22

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

Answer 22

set the ancestor element that the absolute element should use as its boundary to a non-static position value

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, and !Important.

Question 25

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

Answer 25

Styling in you stylesheet that comes later supersedes earlier styling.

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

Children element properties can receive inherited values from their parent elements.

Question 27

List the three selector types in order of increasing specificity.

Answer 27

Type selector, class selector, ID selector

Question 28

Why is using !important considered bad practice?

Answer 28

Makes debugging harder by breaking the natural cascading in the stylesheet.

Question 29

What does the transform property do?

Answer 29

Modifies the coordinate space of the css element.

Question 30

Give four examples of CSS transform functions.

Answer 30

Rotate, Scale, Skew, Translate

Question 31

The transition property is shorthand for which four CSS properties?

Answer 31

Transition - property, duration, timing-function and delay

Question 32

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

Answer 32

min-width, height

Question 33

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

Answer 33

viewport.

Question 34

What is a breakpoint in responsive Web design?

Answer 34

Changes the layout or styling at predefined points.

Question 35

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 35

Percentages are relative to the screen size.

Question 36

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 36

Source order.