CSS

Question 1

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

Answer 1

selector, declaration block, within declaration block properties with some values

Question 2

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

Answer 2

by period .

Question 3

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

Answer 3

just by write element name p , h1 etc

Question 4

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

Answer 4

by typing hash at the beginning #

Question 5

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

Answer 5

name, rgb, hex

Question 6

What CSS properties make up the box model?

Answer 6

padding , border, margin

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

pseudo-class is a keyword added to the selector that specify special state of the selected element

Question 10

What are CSS pseudo-classes useful for?

Answer 10

changing appearance of selected html elements while they are in different state

Question 11

Name at least two units of type size in CSS.

Answer 11

Pixels, 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

no-wrap

Question 15

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

Answer 15

Because divs are block lvl 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 does not effect document flow.

Question 19

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

Answer 19

It doesn’t not effect where it appears on the page.

Question 20

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

Answer 20

element is taken out of the flow. All documents are reorganize

Question 21

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

Answer 21

it’s will move to left top corner of the page or first relative element

Question 22

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

Answer 22

By set relative position for containing block

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

relevance, origin and importance, specificity, order of appearance.

Question 25

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

Answer 25

The source order means what will have priority when rendering html elements.

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

Via CSS “Cascade” the process by which the CSS language determines what styling should ultimately be applied to an element. In this case inheritance.

Question 27

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

Answer 27

min-width, max-width

Question 28

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

Answer 28

viewport meta tag

Question 29

What is a breakpoint in responsive Web design?

Answer 29

Breakpoint in responsive Web design is a point where styling changes.

Question 30

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 30

easier to scale with a screen

Question 31

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 31

because of source order