CSS

Question 1

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

Answer 1

Selector and declarations property and value.

Question 2

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

Answer 2

With a . period and name of class.

Question 3

In CSS, how do you select elements by their tag name?

Answer 3

Just the name of the element.

Question 4

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

Answer 4

pound and name of id attribute.

Question 5

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

Answer 5

RGB values (rgb(100,100,90), hex codes(#ee3e80), color names(darkcyan)

Question 6

What CSS properties make up the box model?

Answer 6

Border, Margin, 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 keyword added to a selector that specifies a special state of the selected elements.

Question 10

What are CSS pseudo-classes useful for?

Answer 10

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 like the position of the mouse.

Question 11

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

Answer 11

px, rem

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

Question 15

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

Answer 15

Because they’re block-level elements.

Question 16

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

Answer 16

row

Question 17

What are the three primary components of a page layout? (Which helper classes do you need?)

Answer 17

Container, rows, columns

Question 18

What is the minimum number of columns that you should put in a row?

Answer 18

1

Question 19

What is the purpose of a container?

Answer 19

To hold all of its contents or contain the entire layout.

Question 20

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

Answer 20

static

Question 21

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

Answer 21

It has no effect on doc flow. Sibling elements still think it’s in its original spot. Shifts from its original position.

Question 22

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

Answer 22

It will move relative to where it would be if it was static. 10px top would move 10px away from the top.

Question 23

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

Answer 23

No longer a part of the document flow. Removed from document flow entirely.

Question 24

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

Answer 24

They cant get moved to where they normally existed. Finds a environment to exist in, nearest element that is normal positioned which is the direct ancestor.

Question 25

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

Answer 25

Setting an anchor point it can exist inside of. So an element that has a static positioning.

Question 26

What are the four box offset properties?

Answer 26

Top bottom left right or inset

Question 27

What are the different types of positioning?

Answer 27

A positioned element is an element whose computed position value is either relative, absolute, fixed, or sticky. (In other words, it’s anything except static.)

Question 28

What is the reason for absolute positioning.

Answer 28

Putting an element on top of an element

Question 29

What are the four components of “the Cascade”?

Answer 29

Source order, inheritance, specificity (strength of selected dependent on how many things its selecting) & !important

Question 30

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

Answer 30

The order in which css rule sets are declared. The later rule sets will take priority or previous if they are effecting the same element.

Question 31

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

Answer 31

Inheritance.

Question 32

List the three selector types in order of increasing specificity.

Answer 32

no value (don’t refer to any one thing), TYPE Column, Class column, id column

Question 33

Why is using !important considered bad practice?

Answer 33

It overrides all other declarations and makes the CSS more difficult to maintain and debug.

Question 34

The transition property is shorthand for which four CSS properties?

Answer 34

Transition-property | transition-duration | transition-timing-function (easing function) lets you establish an acceleration curve so that the speed of the transition can vary over its duration. | transition-delay

Question 35

What does the transform property do?

Answer 35

Lets you rotate, scale, skew or translate an element. It modifies the coordinate space for the css visual formatting model.

Question 36

Give four examples of CSS transform functions.

Answer 36

Matrix, rotate, translate, scale, skew.

Question 37

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

Answer 37

Width and orientation

Question 38

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

Answer 38

Viewport meta tag

Question 39

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

Answer 39

Viewport meta tag

Question 40

What is a breakpoint in responsive Web design?

Answer 40

Breakpoint is where the media query rule works on. Boundary line where it shifts. It is where we choose to restructure the layout.

Question 41

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 41

Percentage takes the screen width into consideration; pixels are static and stays the same regardless of adjusting the screen size.

Question 42

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 42

Because of CSS cascade; source order. Priority is given to CSS rules that are lower on the page.

Question 43

What is the affect of setting an element to display: none?

Answer 43

The element won’t be displayed because it won’t get rendered. The document will treat it as if it didn’t exist along with child elements. No part of document flow.