CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 440 · 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.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <div id="logo"> (d) <h2>
4. 4.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <h2 class="big"> (c) <span id="top"> (d) <li>
5. 5.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
6. 6.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) #note (b) #top (c) .big (d) .top
7. 7.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p id="intro"> (c) <h1 class="box"> (d) <p class="intro">
8. 8.🎯 Can many elements share the same class? (a) No (b) Yes
9. 9.True or false: #end is an id selector. (a) True (b) False
10. 10.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) #big (b) .logo (c) li (d) #end
12. 12.True or false: p is a class selector. (a) True (b) False
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) #red (b) .box (c) #end (d) .red
14. 14.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) .hero (b) #top (c) #star (d) div
15. 15.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which element does the selector .red style? (a) <span class="red"> (b) <p class="star"> (c) <span id="red"> (d) <span class="box">
17. 17.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) p (b) .intro (c) .note (d) #main
18. 18.True or false: .card is a class selector. (a) False (b) True
19. 19.True or false: #hero is an element selector. (a) True (b) False
20. 20.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <h1 class="box"> (c) <p class="top"> (d) <p id="top">
23. 23.True or false: .star is an id selector. (a) True (b) False
24. 24.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) p (b) #main (c) .intro (d) span
25. 25.True or false: .note is an element selector. (a) False (b) True
26. 26.True or false: .note is a class selector. (a) True (b) False
27. 27.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
28. 28.True or false: #main is an id selector. (a) False (b) True
29. 29.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <h2 class="star"> (c) <h2 class="menu"> (d) <li class="note">
30. 30.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .red (b) p (c) #big (d) .top
31. 31.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 id="box"> (c) <h2 class="menu"> (d) <h1 class="box">
32. 32.True or false: #top is an id selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) div (b) .star (c) #logo (d) .logo
34. 34.🎯 Which element does the selector #hero style? (a) <span id="hero"> (b) <p class="menu"> (c) <span id="top"> (d) <span class="hero">
35. 35.True or false: h1 is an id selector. (a) False (b) True
36. 36.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) .hero (b) .note (c) #note (d) #top
38. 38.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <li class="box"> (c) <h2 id="big"> (d) <h2 class="big">
40. 40.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .big (b) h1 (c) #note (d) #hero

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