CSS Worksheet: Practice Test

HTML and CSS lesson 20: CSS test · Set 171 · 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.⚖️ What colour is the text of this element?
<p class="star" id="hero">Hi</p>
CSS:
p { color: blue; }
#hero { color: purple; }
.star { color: black; } (a) orange (b) purple (c) black (d) blue
2.⚖️ Two rules with the same selector set a colour. Which one wins? (a) the shorter one (b) the later one (c) neither (d) the first one
3.🌈 Which colour is rgb(0, 255, 0)? (a) cyan (b) blue (c) bright green (d) yellow
4.✍️ How many declarations (property: value pairs) are in this rule?
#top {
  margin: 10px;
  color: red;
  font-style: italic;
}
5.🖌️ Which CSS property colours behind the text? (a) text-align (b) font-size (c) color (d) background-color
6.⚖️ Which selector is the weakest? (a) an element selector (b) a class selector (c) an id selector
7.💪 Which flexbox property spaces boxes along a row? (a) flex-direction (b) gap (c) justify-content (d) align-items
8.Which of these does CSS do? (a) checks a quiz answer (b) adds space around boxes (c) counts down a timer (d) makes headings and lists
9.⚖️ What colour is the text of this element?
<h2 class="red" id="main">Hi</h2>
CSS:
#main { color: blue; }
.red { color: orange; }
h2 { color: white; } (a) orange (b) white (c) blue (d) red
10.🌈 Which colour is #ffffff? (a) magenta (b) yellow (c) white (d) bright green
11.📦 How wide (px) is this box from the outer edge of its left border to the outer edge of its right border?
.box {
  width: 160px;
  padding: 10px;
  border: 4px solid black;
  margin: 20px;
}
12.✍️ How many declarations (property: value pairs) are in this rule?
p {
background-color: yellow;
}
13.🌈 Which colour of light is strongest in rgb(30, 107, 224)? (a) blue (b) green (c) red
14.What does justify-content: center do? (a) packs boxes at the end (b) puts boxes in the middle (c) equal gaps, none at ends (d) packs boxes at the start
15.🎨 Which tag holds CSS inside the head? (a) <body> (b) <css> (c) <script> (d) <style>
16.📱 The screen is 1100px wide. Does the rule inside @media apply?
p {
  font-size: 24px;
}
@media (min-width: 600px) {
  p {
    font-size: 26px;
  }
} (a) No (b) Yes
17.⚖️ What colour is the text of this element?
<h2 class="big" id="intro">Hi</h2>
CSS:
#intro { color: purple; }
#intro { color: orange; } (a) black (b) yellow (c) orange (d) purple
18.📱 The screen is 414px wide. Does the rule inside @media apply?
p {
  font-size: 20px;
}
@media (max-width: 768px) {
  p {
    font-size: 16px;
  }
} (a) Yes (b) No
19.🖌️ What colour is behind the letters?
h1 {
  background-color: purple;
  text-align: right;
  color: blue;
  font-size: 24px;
} (a) blue (b) purple (c) yellow
20.💪 How wide (px) is each gap between two boxes?
.row {
  display: flex;
  width: 210px;
  justify-content: space-between;
}
Inside are 2 boxes, each 100px wide (no margins).
21.📱 The screen is 414px wide. What font-size (px) does the paragraph get?
p {
  font-size: 16px;
}
@media (min-width: 1024px) {
  p {
    font-size: 24px;
  }
}
22.⚖️ What colour is the text of this element?
<p class="big" id="top">Hi</p>
CSS:
.big { color: red; }
.big { color: green; } (a) white (b) green (c) blue (d) red
23.📦 How wide (px) is this box from the outer edge of its left border to the outer edge of its right border?
.box {
  width: 70px;
  padding: 25px;
  border: 1px solid black;
  margin: 0px;
}
24.💪 How much empty space (px) is left after the last box?
.row {
  display: flex;
  width: 140px;
  justify-content: flex-start;
}
Inside are 2 boxes, each 60px wide (no margins).
25.✍️ What is the selector in this CSS rule?
h1 {
  font-size: 20px;
  background-color: yellow;
  font-weight: bold;
} (a) p (b) yellow (c) font-size (d) h1
26.🌈 In #rrggbb, which colour do the last two digits give? (a) green (b) red (c) blue (d) white
27.What does font-family do? (a) picks the font style (b) makes the text bold (c) centres a heading (d) makes letters bigger
28.📦 How much space top to bottom (px) does this box take in all, margin included?
.box {
  height: 50px;
  padding: 15px;
  border: 4px solid black;
  margin: 10px;
}
29.✍️ Which property is set to 2px solid in this rule?
h2 {
  width: 300px;
  border: 2px solid;
  font-size: 20px;
} (a) font-style (b) border (c) width (d) 2px solid
30.True or false: margin is space outside the border. (a) True (b) False
31.✍️ How does a CSS comment start? (a) // (b) # (c) /* (d) <!--
32.🧩 Which language sets colours and fonts? (a) JavaScript (b) CSS (c) HTML
33.💪 Which justify-content value puts boxes in the middle? (a) flex-start (b) flex-end (c) space-between (d) center
34.🎯 Can many elements share the same class? (a) No (b) Yes
35.🖌️ How big is the text, in px?
h2 {
  background-color: orange;
  color: red;
  font-size: 32px;
  text-align: center;
}
36.⚖️ What colour is the text of this element?
<p class="big" id="end">Hi</p>
CSS:
.big { color: blue; }
.big { color: orange; } (a) purple (b) white (c) orange (d) blue
37.🌈 How many pairs of hex digits are in a colour like #ff8800? (a) 2 (b) 4 (c) 3 (d) 6
38.🌈 Which colour is rgb(0, 0, 255)? (a) bright green (b) white (c) yellow (d) blue
39.True or false: #main is an id selector. (a) True (b) False
40.🌈 Which hex code is bright green? (a) #00ffff (b) #00ff00 (c) #ffff00 (d) #0000ff

Answer key

purple
the later one
bright green
3
background-color
an element selector
justify-content
adds space around boxes
blue
white
188
1
blue
puts boxes in the middle
<style>
Yes
orange
Yes
purple
10
16
green
122
20
h1
blue
picks the font style
108
border
True
/*
CSS
center
Yes
32
orange
3
blue
True
#00ff00

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