CSS Worksheet: Practice Test

HTML and CSS lesson 20: CSS test · Set 180 · 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.

1. 1.💪 How much empty space (px) is left after the last box?
   .row {
     display: flex;
     width: 430px;
     justify-content: flex-start;
   }
   Inside are 4 boxes, each 100px wide (no margins).
2. 2.📱 Which tag helps phones show a page at the right size? (a) the viewport meta tag (b) the title tag (c) the hr tag (d) the br tag
3. 3.💪 How much empty space (px) is left after the last box?
   .row {
     display: flex;
     width: 440px;
     justify-content: flex-start;
   }
   Inside are 4 boxes, each 100px wide (no margins).
4. 4.✍️ How many declarations (property: value pairs) are in this rule?
   h1 {
     font-weight: bold;
     background-color: yellow;
   }
5. 5.🎨 A CSS file usually ends with which extension? (a) .css (b) .js (c) .html (d) .png
6. 6.🎯 Which CSS selector matches this element?
   <p class="box" id="hero">Hello</p> (a) #box (b) .hero (c) .star (d) p
7. 7.📦 How much space across (px) does this box take in all, margin included?
   .box {
     width: 190px;
     padding: 5px;
     border: 3px solid black;
     margin: 0px;
   }
8. 8.What does justify-content: space-between do? (a) equal gaps, none at ends (b) puts boxes in the middle (c) packs boxes at the end (d) packs boxes at the start
9. 9.What does justify-content: flex-start do? (a) puts boxes in the middle (b) equal gaps, none at ends (c) packs boxes at the end (d) packs boxes at the start
10. 10.✍️ Which sign ends each CSS declaration? (a) , (b) . (c) ; (d) :
11. 11.💪 Which flexbox property turns on flexbox? (a) gap (b) justify-content (c) align-items (d) display: flex
12. 12.🌈 In #0000b4 the blue part is the hex number b4. What is it as a normal number?
13. 13.📱 What does a media query check? (a) the battery level (b) the page title (c) the screen width (d) the time of day
14. 14.📱 The screen is 700px wide. What font-size (px) does the paragraph get?
    p {
      font-size: 20px;
    }
    @media (min-width: 1024px) {
      p {
        font-size: 22px;
      }
    }
15. 15.📦 How wide (px) is this box from the outer edge of its left border to the outer edge of its right border?
    .box {
      width: 100px;
      padding: 20px;
      border: 3px solid black;
      margin: 0px;
    }
16. 16.True or false: padding is the gap round content. (a) False (b) True
17. 17.⚖️ What colour is the text of this element?
    <h1 class="big" id="top">Hi</h1>
    CSS:
    .big { color: yellow; }
    #top { color: red; } (a) purple (b) yellow (c) blue (d) red
18. 18.⚖️ Two rules with the same selector set a colour. Which one wins? (a) neither (b) the shorter one (c) the later one (d) the first one
19. 19.🔍 Which is the odd one out? (a) adds space around boxes (b) counts down a timer (c) shows a pop-up message (d) checks a quiz answer
20. 20.📦 How much space across (px) does this box take in all, margin included?
    .box {
      width: 300px;
      padding: 5px;
      border: 2px solid black;
      margin: 15px;
    }
21. 21.True or false: body is a class selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) .red (b) li (c) #big (d) .big
23. 23.🌈 Which colour is #00ff00? (a) black (b) bright green (c) white (d) magenta
24. 24.📱 min-width: 800px applies when the screen is ___. (a) turned off (b) 800px or narrower (c) exactly 100px (d) 800px or wider
25. 25.✍️ Which property is set to 2px solid in this rule?
    p {
      text-align: center;
      margin: 10px;
      border: 2px solid;
      font-style: italic;
    } (a) 2px solid (b) width (c) border (d) font-style
26. 26.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
27. 27.⚖️ What colour is the text of this element?
    <h2 class="star" id="hero">Hi</h2>
    CSS:
    h2 { color: purple; }
    .star { color: green; } (a) yellow (b) green (c) black (d) purple
28. 28.💪 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).
29. 29.🌈 In #d80000 the red part is the hex number d8. What is it as a normal number?
30. 30.🌈 How many pairs of hex digits are in a colour like #ff8800? (a) 2 (b) 3 (c) 6 (d) 4
31. 31.⚖️ What colour is the text of this element?
    <h2 class="box" id="hero">Hi</h2>
    CSS:
    #hero { color: green; }
    #hero { color: black; } (a) green (b) white (c) purple (d) black
32. 32.💪 Which flexbox property sets space between boxes? (a) flex-direction (b) gap (c) justify-content (d) display: flex
33. 33.🌈 Which colour is #ffff00? (a) yellow (b) red (c) magenta (d) bright green
34. 34.✍️ How does a CSS comment start? (a) /* (b) // (c) <!-- (d) #
35. 35.💪 Which flexbox property picks row or column? (a) flex-direction (b) gap (c) display: flex (d) align-items
36. 36.🧩 Which language rounds box corners? (a) JavaScript (b) CSS (c) HTML
37. 37.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 320px;
      justify-content: flex-start;
    }
    Inside are 3 boxes, each 100px wide (no margins).
38. 38.🔍 Which is the odd one out? (a) lays out the page (b) changes the text size (c) sets colours and fonts (d) checks a quiz answer
39. 39.🖌️ What colour are the letters?
    li {
      background-color: orange;
      color: blue;
      font-size: 36px;
      text-align: center;
    } (a) orange (b) white (c) blue
40. 40.✍️ What value is given to background-color in this rule?
    li {
      padding: 8px;
      background-color: yellow;
      text-align: center;
    } (a) yellow (b) background-color (c) 10px (d) 8px

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