CSS

Question 1

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

Answer 1

p {
font-family: Arial;
}

p = selector
font-family: Arial; = declaration
font-family: = property
Arial = value

Question 2

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

Answer 2

.class-name { }

Question 3

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

Answer 3

p { }

Question 4

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

Answer 4

ID-name{ }

Question 5

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

Answer 5

RGB Values
Hexadecimal Codes
Color Names

Question 6

What CSS properties make up the box model?

Answer 6

Margin
Border
Padding
Content

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 way to select an element when its in a given state
Exp: being hovered
Currently being clicked on

Question 10

What are CSS pseudo-classes useful for?

Answer 10

They let you apply different styling to elements when those elements are in their given states

Question 11

Name at least two units of type size in CSS.

Answer 11

px
rem
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 (Left to right)

Question 14

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

Answer 14

nowrap (everything goes in one line)

Question 15

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

Answer 15

Every element is status by default

Question 16

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

Answer 16

It’ll transform the item from its original position while still holding its original space on the file

Question 17

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

Answer 17

It’ll appear on the same place until transformations are added

Question 18

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

Answer 18

The surrounding elements act as if the moved item was never there to begin with.

Question 19

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

Answer 19

It’ll look for the first ancestor who is not set to position: static; (all by default)

Question 20

What are the four box offset properties?

Answer 20

top
Bottom
Left
right

Question 21

What are the four components of “the Cascade”.

Answer 21

Source Order
Inheritance
Specificity
!important

Question 22

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

Answer 22

If two different selectors are on the same specificity, the selector which is written lowest on your styles.css sheet will be applied to your HTML page.

Question 23

How is it possible for the styles of an element to be applied to its children as well without an additional CSS rule?

Answer 23

By default, many styles affect the specified element and all children under it, through inheritance.

Question 24

List the three selector types in order of increasing specificity.

Answer 24

Element
Class
ID

Question 25

Why is using !important considered bad practice?

Answer 25

It breaks the natural cascading in your code so it would make debugging difficult.

Question 26

What does the transform property do?

Answer 26

It allows you to take an element on your HTML page, and move it around, from its original position, with CSS

Question 27

Give four examples of CSS transform functions.

Answer 27

transform: rotate(-50deg);
transform: translateY(0.25rem);
transform: translateX(0.25rem);
transform: scale(x%, y%);

Question 28

The transition property is shorthand for which four CSS properties?

Answer 28

Its a single combination of transition-property, transition-duration, transition-timing-function, & transition-delay

Question 29

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

Answer 29

Only screen
Only print

@media only screen and (min-width: 500px) { css codeblock }

Question 30

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

Answer 30

Viewport meta tag

Question 31

What is a breakpoint in responsive Web design?

What does it look like?

Answer 31

A given width of the screen where it would trigger different behaviors of styling to take place

@media only screen and (min-width: 500px) {
    img {
        width: 50%;
    }
}

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

Percentages are based on the ever-changing size of the screen, so they adjust with the screen size.

Pixels are stuck to a certain size, no matter how large the screen. This would lead to items being too large for small screens or too small for large screens.

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?

Answer 33

The CSS follows the Source Order rule. The lowest item on the styles sheet takes precedence.