CSS Worksheet: Practice Test

HTML and CSS lesson 20: CSS test · Set 149 · 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.

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1.🌈 Which colour is rgb(255, 255, 255)? (a) white (b) blue (c) cyan (d) magenta
2.📦 How much space across (px) does this box take in all, margin included?
.box {
  width: 150px;
  padding: 30px;
  border: 5px solid black;
  margin: 10px;
}
3.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
4.⚖️ Two rules with the same selector set a colour. Which one wins? (a) the first one (b) the later one (c) neither (d) the shorter one
5.📱 The screen is 1100px wide. Does the rule inside @media apply?
p {
  font-size: 24px;
}
@media (min-width: 480px) {
  p {
    font-size: 32px;
  }
} (a) Yes (b) No
6.✍️ Which sign ends each CSS declaration? (a) : (b) ; (c) . (d) ,
7.✍️ Which property is set to red in this rule?
#top {
  padding: 8px;
  font-weight: bold;
  font-size: 20px;
  color: red;
} (a) text-align (b) font-size (c) color (d) red
8.✍️ What is the selector in this CSS rule?
.box {
background-color: yellow;
border: 2px solid;
} (a) background-color (b) h2 (c) .box (d) 2px solid
9.🌈 Which colour of light is strongest in rgb(0, 48, 223)? (a) green (b) red (c) blue
10.🖌️ What colour are the letters?
p {
  background-color: blue;
  color: orange;
  text-align: center;
  font-size: 16px;
} (a) blue (b) red (c) orange
11.🎯 Which CSS selector matches this element?
<div class="box" id="intro">Hello</div> (a) .intro (b) div (c) .star (d) #box
12.True or false: margin is the line round the box. (a) True (b) False
13.💪 How much empty space (px) is before the first box?
.row {
  display: flex;
  width: 280px;
  justify-content: center;
}
Inside are 4 boxes, each 50px wide (no margins).
14.📦 In the box model, which part is a solid or dotted edge? (a) content (b) margin (c) border (d) padding
15.🖌️ Which CSS property picks the font style? (a) background-color (b) font-size (c) font-family (d) color
16.📱 The screen is 375px wide. Does the rule inside @media apply?
p {
  font-size: 12px;
}
@media (min-width: 1024px) {
  p {
    font-size: 14px;
  }
} (a) No (b) Yes
17.💪 How much empty space (px) is before the first box?
.row {
  display: flex;
  width: 180px;
  justify-content: center;
}
Inside are 2 boxes, each 80px wide (no margins).
18.🎯 Which element does the selector li style? (a) <div> (b) <p id="top"> (c) <li class="big"> (d) <span class="big">
19.True or false: h1 is an element selector. (a) True (b) False
20.🖌️ What colour are the letters?
h2 {
  font-size: 40px;
  background-color: blue;
  text-align: center;
  color: black;
} (a) black (b) yellow (c) blue
21.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="box"> (c) <div class="red"> (d) <span class="star">
22.🖌️ What colour are the letters?
h2 {
  color: black;
  font-size: 40px;
  text-align: right;
  background-color: yellow;
} (a) green (b) yellow (c) black
23.🌈 Which colour of light is strongest in rgb(24, 226, 69)? (a) red (b) green (c) blue
24.📱 The screen is 320px wide. Does the rule inside @media apply?
p {
  font-size: 12px;
}
@media (min-width: 768px) {
  p {
    font-size: 16px;
  }
} (a) Yes (b) No
25.📦 How much space across (px) does this box take in all, margin included?
.box {
  width: 230px;
  padding: 10px;
  border: 5px solid black;
  margin: 10px;
}
26.✍️ How many declarations (property: value pairs) are in this rule?
h2 {
font-weight: bold;
margin: 10px;
}
27.⚖️ Which selector is the weakest? (a) a class selector (b) an id selector (c) an element selector
28.💪 How much empty space (px) is before the first box?
.row {
  display: flex;
  width: 380px;
  justify-content: center;
}
Inside are 4 boxes, each 60px wide (no margins).
29.📦 How much space across (px) does this box take in all, margin included?
.box {
  width: 120px;
  padding: 15px;
  border: 5px solid black;
  margin: 15px;
}
30.What does justify-content: flex-start 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
31.💪 How much empty space (px) is before the first box?
.row {
  display: flex;
  width: 310px;
  justify-content: flex-end;
}
Inside are 3 boxes, each 80px wide (no margins).
32.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <p class="menu"> (c) <h1> (d) <h2 class="menu">
33.📦 How much space across (px) does this box take in all, margin included?
.box {
  width: 150px;
  padding: 20px;
  border: 2px solid black;
  margin: 15px;
}
34.🌈 In #rrggbb, which colour do the last two digits give? (a) blue (b) red (c) green (d) white
35.Which of these does HTML do? (a) reacts to a button click (b) changes the text size (c) rounds box corners (d) puts a picture on a page
36.🧩 Which language makes headings and lists? (a) CSS (b) HTML (c) JavaScript
37.⚖️ Which selector is the strongest? (a) a class selector (b) an element selector (c) an id selector
38.✍️ What value is given to padding in this rule?
body {
  width: 300px;
  padding: 8px;
  font-style: italic;
  color: red;
} (a) bold (b) 2px solid (c) 8px (d) padding
39.📱 The screen is 540px wide. Does the rule inside @media apply?
p {
  font-size: 12px;
}
@media (max-width: 600px) {
  p {
    font-size: 10px;
  }
} (a) Yes (b) No
40.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector

Answer key

white
240
a class selector
the later one
Yes
;
color
.box
blue
orange
div
False
40
border
font-family
No
10
<li class="big">
True
black
<div class="red">
black
green
No
280
2
an element selector
70
190
packs boxes at the start
70
<p class="menu">
224
blue
puts a picture on a page
HTML
an id selector
8px
Yes
a class selector

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