CSS

Question 1

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

Answer 1

Property and value which are separated by a colon.

Question 2

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

Answer 2

Use a . before the name of the class attribute.

Question 3

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

Answer 3

Use the name of the element.

Question 4

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

Answer 4

Use a # before the name of the id attribute.

Question 5

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

Answer 5

RGB values, hex codes, and pre determined color names.

Question 6

What CSS properties make up the box model?

Answer 6

Margin, padding, border

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 keyword added to a selector to specify the special state of the selected element.

Question 10

What are CSS pseudo-classes useful for?

Answer 10

To apply styling to elements based on html structure/grouping or user actions without the need for a class manually applied by the dev.

Question 11

Name at least two units of type size in CSS.

Answer 11

rem/em, pixel, %

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 is the default direction

Question 14

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

Answer 14

nowrap is the default

Question 15

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

Answer 15

By default, div elements are block 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 doesn’t change the document flow.

Question 19

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

Answer 19

The element would move in relation to where it would be in normal flow.

Question 20

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

Answer 20

The element is taken out of the normal flow.

Question 21

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

Answer 21

It looks for the first non static ancestor and positions it to that element.

Question 22

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

Answer 22

By setting the containing block to position: relative with no values.

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

The order that your CSS rules are written. Last styling has ultimate effect.

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.

Question 27

List the three selector types in order of increasing specificity.

Answer 27

type selectors, then class selectors, then id selectors

Question 28

Why is using !important considered bad practice?

Answer 28

Takes a lot more debugging to fix because it breaks the natural cascading.

Question 29

What does the transform property do?

Answer 29

Transform lets you rotate, scale, skew, or translate an element.

Question 30

Give four examples of CSS transform functions.

Answer 30

Translate, Scale, Rotate, Skew

Question 31

The transition property is shorthand for which four CSS properties?

Answer 31

Delay, duration, property, timing function

Question 32

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

Answer 32

Screen and print

Question 33

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

Answer 33

Viewport meta tag.

Question 34

What is a breakpoint in responsive Web design?

Answer 34

The points where the media query is introduced so the design for the space is better optimized.

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

Easier to scale up or down based on percentages instead of being stuck at the exact pixel count.

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 in which the CSS language interprets the code.