CSS Worksheet: Practice Test

HTML and CSS lesson 20: CSS test · Set 635 · 40 questions

Code tip (Rule, then maths): Find the topic: syntax, selectors, properties, colours, box model, cascade, flexbox or media queries. Decide which rule or property applies to the element. For sizes, write the sum down: both sides for the box model, free space for flexbox.

NameDateTime takenScore ___ / 40

1.💪 How wide (px) is each gap between two boxes?
.row {
  display: flex;
  width: 170px;
  justify-content: space-between;
}
Inside are 3 boxes, each 50px wide (no margins).
2.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
3.🧩 Which language makes headings and lists? (a) HTML (b) CSS (c) JavaScript
4.💪 How wide (px) is each gap between two boxes?
.row {
  display: flex;
  width: 160px;
  justify-content: space-between;
}
Inside are 3 boxes, each 40px wide (no margins).
5.✍️ What value is given to background-color in this rule?
body {
  text-align: center;
  background-color: yellow;
  width: 300px;
} (a) 8px (b) yellow (c) 10px (d) background-color
6.💪 Which flexbox property sets space between boxes? (a) flex-direction (b) gap (c) display: flex (d) justify-content
7.💪 How wide (px) is each gap between two boxes?
.row {
  display: flex;
  width: 370px;
  justify-content: space-between;
}
Inside are 4 boxes, each 40px wide (no margins).
8.What does justify-content: flex-start do? (a) packs boxes at the end (b) packs boxes at the start (c) puts boxes in the middle (d) equal gaps, none at ends
9.🖌️ Which CSS property centres a heading? (a) font-family (b) font-size (c) text-align (d) font-weight
10.What does justify-content: center do? (a) puts boxes in the middle (b) equal gaps, none at ends (c) packs boxes at the start (d) packs boxes at the end
11.🖌️ Where does the text sit on its line?
p {
  font-size: 24px;
  background-color: green;
  color: blue;
  text-align: left;
} (a) on the left (b) on the right (c) in the middle
12.💪 Which flexbox property spaces boxes along a row? (a) flex-direction (b) display: flex (c) align-items (d) justify-content
13.✍️ What is the selector in this CSS rule?
#top {
width: 300px;
color: red;
} (a) li (b) width (c) #top (d) red
14.🌈 Which colour of light is strongest in rgb(13, 204, 9)? (a) red (b) green (c) blue
15.📱 min-width: 800px applies when the screen is ___. (a) turned off (b) exactly 100px (c) 800px or wider (d) 800px or narrower
16.📱 The screen is 375px wide. Does the rule inside @media apply?
p {
  font-size: 12px;
}
@media (max-width: 1024px) {
  p {
    font-size: 8px;
  }
} (a) No (b) Yes
17.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
18.🖌️ Where does the text sit on its line?
p {
  color: green;
  text-align: left;
  font-size: 28px;
  background-color: red;
} (a) on the right (b) in the middle (c) on the left
19.✍️ How does a CSS comment start? (a) /* (b) # (c) // (d) <!--
20.💪 How much empty space (px) is before the first box?
.row {
  display: flex;
  width: 160px;
  justify-content: flex-end;
}
Inside are 2 boxes, each 50px wide (no margins).
21.✍️ What value is given to margin in this rule?
.box {
margin: 10px;
font-weight: bold;
} (a) 8px (b) margin (c) bold (d) 10px
22.✍️ What is the selector in this CSS rule?
body {
font-size: 20px;
text-align: center;
} (a) center (b) body (c) .box (d) font-size
23.✍️ How many declarations (property: value pairs) are in this rule?
.note {
text-align: center;
}
24.True or false: h1 is a class selector. (a) False (b) True
25.📱 max-width: 600px applies when the screen is ___. (a) exactly 1000px (b) 600px or narrower (c) 600px or wider (d) turned off
26.🖌️ How big is the text, in px?
p {
  color: blue;
  text-align: left;
  font-size: 28px;
  background-color: green;
}
27.📦 In the box model, which part is space outside the border? (a) padding (b) border (c) margin (d) content
28.📱 What does a media query check? (a) the page title (b) the time of day (c) the screen width (d) the battery level
29.💪 Which justify-content value equal gaps, none at ends? (a) flex-start (b) space-between (c) flex-end (d) center
30.💪 How much empty space (px) is before the first box?
.row {
  display: flex;
  width: 200px;
  justify-content: flex-end;
}
Inside are 4 boxes, each 40px wide (no margins).
31.🖌️ Which CSS property colours behind the text? (a) background-color (b) font-size (c) font-family (d) color
32.📱 The screen is 375px wide. Does the rule inside @media apply?
p {
  font-size: 16px;
}
@media (max-width: 768px) {
  p {
    font-size: 14px;
  }
} (a) No (b) Yes
33.📱 The screen is 375px wide. Does the rule inside @media apply?
p {
  font-size: 16px;
}
@media (max-width: 1024px) {
  p {
    font-size: 14px;
  }
} (a) No (b) Yes
34.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
35.📱 The screen is 540px wide. What font-size (px) does the paragraph get?
p {
  font-size: 20px;
}
@media (max-width: 768px) {
  p {
    font-size: 16px;
  }
}
36.🌈 Which colour is rgb(255, 255, 0)? (a) cyan (b) black (c) yellow (d) white
37.⚖️ What colour is the text of this element?
<p class="big" id="logo">Hi</p>
CSS:
#logo { color: blue; }
#logo { color: purple; } (a) red (b) blue (c) purple (d) orange
38.📱 The screen is 540px wide. Does the rule inside @media apply?
p {
  font-size: 12px;
}
@media (max-width: 480px) {
  p {
    font-size: 10px;
  }
} (a) No (b) Yes
39.✍️ What value is given to background-color in this rule?
h2 {
margin: 10px;
background-color: yellow;
} (a) yellow (b) 10px (c) 8px (d) background-color
40.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2

Answer key

10
#
HTML
20
yellow
gap
70
packs boxes at the start
text-align
puts boxes in the middle
on the left
justify-content
#top
green
800px or wider
Yes
an element selector
on the left
/*
60
10px
body
1
False
600px or narrower
28
margin
the screen width
space-between
40
background-color
Yes
Yes
.
16
yellow
purple
No
yellow
1

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