CSS

Question 1

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

Answer 1

CSS rule contains two parts: a selector and a declaration

Question 2

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

Answer 2

The value that matches the one specified after the period symbol

Question 3

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

Answer 3

Matches element names

Question 4

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

Answer 4

The value that matches the one specified after the pound symbol

Question 5

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

Answer 5

RGB values
Hex codes
Color names

Question 6

What CSS properties make up the box model?

Answer 6

Border, margin, and padding

Question 7

Which CSS property pushes boxes away from each other?

Answer 7

Margin

Question 8

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

Answer 8

Padding

Question 9

What is a pseudo-class?

Answer 9

Keyword added to a selector that specifies a special state of the selected

Question 10

What are CSS pseudo-classes useful for?

Answer 10

Pseudo-classes let you apply a style to an element not only in relation to the content of the document tree but also in relation to external factors

Question 11

Name at least two units of type size in CSS.

Answer 11

px
%
em

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: all flex items will be on one line

Question 15

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

Answer 15

div element is a block-level element so it will take up the full width available

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 to an element affect document flow?

Answer 18

does not change document flow; allows you to control where the element appears relative to where it originally should be

Question 19

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

Answer 19

does not change document flow; allows you to control where the element appears relative to where it originally should be

Question 20

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

Answer 20

takes it out of the document flow and moves the starting position of that document

Question 21

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

Answer 21

takes it out of the document flow and moves the starting position of that document

Question 22

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

Answer 22

set the value of the position property to anything other than static for the containing block

Question 23

What are the four box offset properties?

Answer 23

top, right, left, bottom

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

order that your CSS rules are written in your stylesheet

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

Inheritance is the process by which certain CSS properties on a child HTML element can receive value from a parent element

Question 27

List the three selector types in order of increasing specificity.

Answer 27

element, class, id

Question 28

Why is using !important considered bad practice?

Answer 28

!important makes debugging more difficult by breaking the natural cascading in your stylesheets

Question 29

What does the transform property do?

Answer 29

The transform CSS property lets you rotate, scale, skew, or translate an element It modifies the coordinate space of the CSS visual formatting model

Question 30

The transition property is shorthand for which four CSS properties?

Answer 30

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

Question 31

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

Answer 31

min-width | orientation

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 points at which a media query is introduced are known as breakpoints

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

Responds relative to the screen size while pixel is an absolute unit

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

Because of the source order component of the cascade