CSS

Question 1

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

Answer 1

Inside a CSS ruleset:

Selector + Declaration Block

Inside the Declaration Block:

Opening.Curly Braces ( { ) + Property + Value + Closing Curly Braces ( } )Inside a CSS ruleset:

Selector + Declaration Block

Inside the Declaration Block:

Opening.Curly Braces ( { ) + Property + Value + Closing Curly Braces ( } )

Question 2

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

Answer 2

period (dot) before class title

e.g. .class_name { };

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

Hash-tag before the id title

e.g. #id_title { };

Question 5

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

Answer 5

Hex

RGBa

RGB

HSL (Hue Saturation Lighting)

HSLa

Color Name

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 pseudo-class is added to a selector to specify a certain interaction that occurs when the user interacts with the selected element/id/class specified.

:hover
:focus
:active

Question 10

What are CSS pseudo-classes useful for?

Answer 10

CSS pseudo-class is useful for changing the appearance of elements when a user is interacting with them.

Question 11

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

Answer 11

px - pixels
rem - root em (approx. 16px)
% - percentage

Question 12

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

Answer 12

font-family property

Question 13

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

Answer 13

flex-direction: row (default)

Default direction is left to right which is in a “row”

Question 14

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

Answer 14

flex-wrap: no-wrap (default)

default flex-wrap for a container is no-wrap which means all on one line

Question 15

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

Answer 15

div elements are block-type elements and so will start a new line when “stacked” on one another

Question 16

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

Answer 16

flex-direction: row (default)

Left to Right

Question 17

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

Answer 17

position: static (default)

Question 18

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

Answer 18

Relative position does not affect document flow and only affects the elements own positioning based on its original/relative spot.

Question 19

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

Answer 19

position: relative shifts the element relative to its original location

Question 20

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

Answer 20

Absolute positioning removes the element from the flow of the document

Question 21

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

Answer 21

Positions the element according to either an ancestor element with position:relative or to the entire page

Question 22

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

Answer 22

Applying position: relative to its containing block

Question 23

What are the four box offset properties?

Answer 23

position: static;
position: relative;
position: absolute;
position: fixed;

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 your stylesheet

Lower the ruleset, the more priority it has

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 means that certain CSS properties on a child HTML element can receive value from a parent element if no CSS for that property is directly declared on the child element

Question 27

List the three selector types in order of increasing specificity.

Answer 27

1) ID Selector
2) Class Selector
3) Element Selector

Question 28

Why is using !important considered bad practice?

Answer 28

Putting !important on a CSS ruleset may throw away all cascade components of the stylesheet and may ruin the organization of a CSS stylesheet

Question 29

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

Answer 29

min-width

max-width

Question 30

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

Answer 30

< meta = “viewport” >

Viewport meta tag

Question 31

What is a breakpoint in responsive Web design?

Answer 31

Breakpoint is a point in the viewport size where the layout would change

Question 32

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 32

% width adapts to the viewport sizing

Question 33

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?