CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 928 · 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 #end? (a) a class selector (b) an id selector (c) an element selector
2. 2.True or false: .note is an id selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <div class="star" id="hero">Hello</div> (a) .menu (b) #star (c) .star (d) .hero
4. 4.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
5. 5.True or false: li is an element selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <p class="star" id="top">Hello</p> (a) h1 (b) p (c) #intro (d) .menu
7. 7.🎯 Can many elements share the same class? (a) No (b) Yes
8. 8.🎯 Which CSS selector matches this element?
   <li class="note" id="hero">Hello</li> (a) li (b) #top (c) div (d) .big
9. 9.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) #main (b) #note (c) .big (d) .main
10. 10.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <li class="star"> (c) <h2 id="top"> (d) <h2 class="top">
11. 11.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
13. 13.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
14. 14.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
16. 16.True or false: #hero is an id selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) p (b) .big (c) .hero (d) #note
18. 18.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) .red (b) .logo (c) #logo (d) #end
20. 20.True or false: .card is a class selector. (a) False (b) True
21. 21.True or false: p is a class selector. (a) False (b) True
22. 22.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <li> (c) <span id="intro"> (d) <div class="menu">
23. 23.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .top (b) .box (c) #red (d) #top
24. 24.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <h1 class="red"> (c) <span class="red"> (d) <p>
25. 25.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <p id="end"> (c) <p id="logo"> (d) <h1 class="note">
26. 26.🎯 Which element does the selector div style? (a) <p class="box"> (b) <span> (c) <h1 id="main"> (d) <div class="box">
27. 27.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) .note (b) #intro (c) #menu (d) span
28. 28.True or false: .menu is an id selector. (a) True (b) False
29. 29.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
30. 30.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h2 class="menu"> (c) <h1 id="intro"> (d) <h1 id="main">
31. 31.True or false: #logo is an id selector. (a) True (b) False
32. 32.True or false: #hero is a class selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) .logo (b) #star (c) .menu (d) .star
34. 34.🎯 Which element does the selector span style? (a) <span class="star"> (b) <p> (c) <h1 class="star"> (d) <h2 id="main">
35. 35.True or false: img is a class selector. (a) False (b) True
36. 36.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 id="red"> (c) <h1 class="red"> (d) <h1 class="box">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .intro (b) #main (c) #star (d) #intro
38. 38.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <p id="main"> (c) <p id="intro"> (d) <h1 class="note">
39. 39.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <p class="note"> (c) <span class="intro"> (d) <span id="intro">
40. 40.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <li class="note"> (c) <h2 class="star"> (d) <h2 class="menu">

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