CSS

Question 1

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

Answer 1

selector {
property: value;
}

Question 2

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

Answer 2

.class-name {
property: value;
}

Question 3

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

Answer 3

type-name {
property: value;
}

Question 4

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

Answer 4

#id-name {
  property: value;
}

Question 5

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

Answer 5

RGB, hex codes, and color names

Question 6

What CSS properties make up the box model?

Answer 6

margin, border, 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 class that shows when the state of an element is changed

Question 10

What are CSS pseudo-classes useful for?

Answer 10

They can be used to apply changes in CSS when the state of an element is changed.

Question 11

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

Answer 11

rem and pt

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

They default as block elements, taking up the whole row.

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

Initial position takes up space in the document flow, then offset properties are used to change final position which does not affect document flow.

Question 19

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

Answer 19

position: relative itself does not change where it appears on the page. Once offset properties are applied, the element can be moved from its initial position to anywhere on the page without interfering with placement of other elements.

Question 20

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

Answer 20

setting position: absolute on an element will cause other elements to fill in the space of the absolute element

Question 21

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

Answer 21

setting position: absolute on an element could change the position of the element on the page depending on the position of its parent (whether it’s non-static or not). If non-static, the element can move to fit the offset properties based on the dimensions of either the nearest parent with non-static position or the body element itself.

Question 22

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

Answer 22

Any non-static position property in the containing block will constrain

Question 23

What are the four box offset properties?

Answer 23

top, left, right, bottom

Question 24

What are the four components of “the Cascade”.

Answer 24

inheritance, source order, specificity, !important

Question 25

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

Answer 25

The order that the selectors appear in the css file

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

If the trait is inheritable, the styles will automatically be applied through inheritance

Question 27

List the three selector types in order of increasing specificity.

Answer 27

type , class, id

Question 28

Why is using !important considered bad practice?

Answer 28

It is very difficult to override

Question 29

What does the transform property do?

Answer 29

It allows for physical alteration or moving of an element with the webpage space

Question 30

Give four examples of CSS transform functions.

Answer 30

rotate, translate, scale, skew

Question 31

The transition property is shorthand for which four CSS properties?

Answer 31

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

Question 32

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

Answer 32

height, width, color
most common are min-width
check out Bootstrap

Question 33

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

Answer 33

meta name=”viewport”

Question 34

What is a breakpoint in responsive Web design?

Answer 34

The point in a design where content begins to trigger the media query to change format

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

The content can scale up and down gradually as screen size increases, maintaining the intended format and layout for the page

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