CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 373 · 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 #hero? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <div class="star"> (c) <p class="star"> (d) <span>
4. 4.🎯 Which element does the selector #end style? (a) <h1 id="end"> (b) <h1 class="end"> (c) <h1 id="hero"> (d) <h2 class="note">
5. 5.🎯 Which CSS selector matches this element?
   <div class="note" id="end">Hello</div> (a) .big (b) div (c) #note (d) span
6. 6.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p id="box"> (c) <p class="box"> (d) <p class="star">
7. 7.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which CSS selector matches this element?
   <p class="note" id="end">Hello</p> (a) .end (b) #hero (c) .note (d) h1
9. 9.🎯 Can many elements share the same class? (a) No (b) Yes
10. 10.True or false: body is a class selector. (a) False (b) True
11. 11.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
12. 12.True or false: img is an element selector. (a) False (b) True
13. 13.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) h2 (b) #big (c) #hero (d) .hero
16. 16.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h1 class="menu"> (c) <h2 class="note"> (d) <h1 class="star">
17. 17.🎯 Which element does the selector #top style? (a) <h1 id="top"> (b) <h1 id="intro"> (c) <h1 class="top"> (d) <h2 class="box">
18. 18.True or false: #top is an id selector. (a) False (b) True
19. 19.True or false: li is a class selector. (a) False (b) True
20. 20.True or false: p is a class selector. (a) True (b) False
21. 21.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <span class="menu"> (c) <div class="top"> (d) <div id="intro">
22. 22.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #top (b) #box (c) .hero (d) #hero
24. 24.🎯 Which element does the selector #intro style? (a) <li class="note"> (b) <h2 id="main"> (c) <h2 id="intro"> (d) <h2 class="intro">
25. 25.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
26. 26.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) .main (b) #logo (c) #star (d) .star
27. 27.True or false: .menu is an element selector. (a) True (b) False
28. 28.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
29. 29.True or false: .big is an element selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .red (b) #intro (c) #main (d) h2
31. 31.True or false: body is an element selector. (a) False (b) True
32. 32.True or false: #hero is an id selector. (a) False (b) True
33. 33.True or false: .star is an id selector. (a) True (b) False
34. 34.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <h2 id="hero"> (c) <li class="note"> (d) <h2 id="top">
35. 35.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="top"> (c) <h1 class="menu"> (d) <span class="menu">
36. 36.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #logo (b) span (c) #note (d) #main
37. 37.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) .end (b) .red (c) #big (d) .big
38. 38.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) .red (b) div (c) .big (d) #big
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) .logo (b) h2 (c) h1 (d) .note

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