CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 388 · 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 an id selector? (a) . (b) & (c) # (d) @
2. 2.🎯 Which element does the selector .big style? (a) <h2 class="big"> (b) <h2 class="red"> (c) <h2 id="big"> (d) <li class="box">
3. 3.🎯 Which CSS selector matches this element?
   <li class="big" id="intro">Hello</li> (a) .red (b) #big (c) .big (d) div
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) 2 (d) any number
5. 5.True or false: #end is a class selector. (a) False (b) True
6. 6.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
7. 7.True or false: .card is an id selector. (a) False (b) True
8. 8.🎯 Which element does the selector #hero style? (a) <div class="hero"> (b) <div id="top"> (c) <div id="hero"> (d) <span class="note">
9. 9.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
10. 10.🎯 Can many elements share the same class? (a) Yes (b) No
11. 11.True or false: body is an id selector. (a) True (b) False
12. 12.True or false: #hero is a class selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) .box (b) #red (c) .end (d) span
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) .star (c) .top (d) .box
15. 15.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <h1> (c) <li id="intro"> (d) <p class="menu">
16. 16.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) #hero (b) p (c) span (d) #note
17. 17.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <div class="note"> (c) <li class="menu"> (d) <li class="star">
19. 19.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .menu (b) #star (c) #logo (d) #main
21. 21.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) .red (b) #hero (c) #red (d) .box
23. 23.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #red (b) .box (c) .end (d) p
25. 25.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p class="star"> (c) <p id="star"> (d) <h1 class="note">
26. 26.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) span (b) div (c) .top (d) #box
27. 27.True or false: img is a class selector. (a) True (b) False
28. 28.True or false: body is an element selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) .end (b) .star (c) li (d) #hero
30. 30.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span id="top"> (c) <p class="menu"> (d) <span class="top">
31. 31.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
32. 32.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
33. 33.🎯 Which element does the selector .menu style? (a) <h2 class="big"> (b) <h1 class="note"> (c) <h1 class="menu"> (d) <h1 id="menu">
34. 34.True or false: img is an element selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) #top (b) #hero (c) .hero (d) .star
36. 36.True or false: .big is a class selector. (a) True (b) False
37. 37.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
38. 38.True or false: p is a class selector. (a) False (b) True
39. 39.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) .hero (b) h2 (c) .star (d) .menu

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