CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 873 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
2. 2.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
3. 3.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
4. 4.True or false: .menu is an element selector. (a) False (b) True
5. 5.🎯 Can many elements share the same class? (a) Yes (b) No
6. 6.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 Which CSS selector matches this element?
   <span class="big" id="main">Hello</span> (a) #logo (b) #big (c) .red (d) #main
8. 8.True or false: #top is an id selector. (a) False (b) True
9. 9.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
11. 11.True or false: .menu is a class selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) #intro (b) .star (c) li (d) h2
13. 13.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) span (b) #logo (c) p (d) #box
14. 14.🎯 Which element does the selector .star style? (a) <div class="star"> (b) <div class="menu"> (c) <div id="star"> (d) <span class="note">
15. 15.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
16. 16.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) h1 (b) #logo (c) .red (d) #big
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) li (b) .hero (c) .red (d) #red
18. 18.True or false: .big is a class selector. (a) False (b) True
19. 19.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <h2 class="menu"> (c) <h2 class="star"> (d) <li class="note">
21. 21.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) .big (b) .hero (c) .note (d) span
22. 22.🎯 Which element does the selector #main style? (a) <p id="main"> (b) <h1 class="menu"> (c) <p class="main"> (d) <p id="logo">
23. 23.True or false: .note is a class selector. (a) True (b) False
24. 24.True or false: li is an element selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) h1 (b) .main (c) p (d) #menu
26. 26.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p id="big"> (c) <p class="big"> (d) <p class="red">
27. 27.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) #red (b) p (c) span (d) .box
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) .hero (b) #hero (c) #top (d) .note
29. 29.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <li class="box"> (c) <h2 id="big"> (d) <h2 class="big">
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) .red (b) .end (c) #big (d) .big
31. 31.True or false: #end is an id selector. (a) True (b) False
32. 32.True or false: .star is a class selector. (a) False (b) True
33. 33.🎯 Which element does the selector h2 style? (a) <h2 class="note"> (b) <div class="note"> (c) <span id="logo"> (d) <li>
34. 34.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 Which element does the selector #end style? (a) <h1 id="end"> (b) <h2 class="star"> (c) <h1 id="hero"> (d) <h1 class="end">
36. 36.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
37. 37.True or false: #logo is an id selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) h1 (b) .note (c) #intro (d) #top
39. 39.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h2 class="note"> (c) <h1 class="menu"> (d) <h1 class="star">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) .logo (b) #end (c) .star (d) h1

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