CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 228 · 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.True or false: #main is an id selector. (a) False (b) True
2. 2.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h1 id="note"> (c) <h1 class="big"> (d) <h2 class="red">
3. 3.True or false: #top is a class selector. (a) True (b) False
4. 4.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="end">Hello</h2> (a) .menu (b) #menu (c) #hero (d) li
6. 6.True or false: .note is an id selector. (a) False (b) True
7. 7.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <span class="box"> (c) <p> (d) <h1 class="box">
9. 9.True or false: .menu is an id selector. (a) True (b) False
10. 10.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <h2 id="intro"> (c) <li class="note"> (d) <h2 id="top">
11. 11.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) #big (b) .end (c) .big (d) #hero
12. 12.🎯 Which element does the selector .menu style? (a) <span class="note"> (b) <span class="menu"> (c) <p class="big"> (d) <span id="menu">
13. 13.True or false: body is an element selector. (a) True (b) False
14. 14.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
15. 15.True or false: .card is an element selector. (a) True (b) False
16. 16.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
17. 17.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Can many elements share the same class? (a) No (b) Yes
19. 19.True or false: #end is an element selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) p (b) #intro (c) #menu (d) .top
21. 21.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
22. 22.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
23. 23.True or false: .star is an id selector. (a) True (b) False
24. 24.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) .menu (b) #star (c) .star (d) p
25. 25.True or false: #end is an id selector. (a) True (b) False
26. 26.🎯 Which element does the selector p style? (a) <h1> (b) <li id="main"> (c) <h2 class="star"> (d) <p class="star">
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) #box (b) #intro (c) .box (d) h2
28. 28.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .star (b) #box (c) #intro (d) .intro
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) #intro (b) .menu (c) .top (d) h2
30. 30.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h1 class="menu"> (c) <h1 id="star"> (d) <h2 class="note">
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) .main (b) .red (c) li (d) #red
32. 32.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <p id="top"> (c) <div> (d) <li class="menu">
34. 34.True or false: li is an element selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) h1 (b) .big (c) #hero (d) #note
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) h1 (b) #top (c) h2 (d) #box
37. 37.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
38. 38.True or false: #main is a class selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) #red (b) .hero (c) #hero (d) span
40. 40.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @

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