CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 993 · 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 element does the selector li style? (a) <div> (b) <li class="box"> (c) <span class="box"> (d) <p id="main">
2. 2.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p id="star"> (c) <h1 class="note"> (d) <p class="star">
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="note" id="hero">Hello</h2> (a) #note (b) .big (c) #hero (d) #top
4. 4.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
5. 5.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
6. 6.True or false: #top is a class selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <p class="big" id="hero">Hello</p> (a) #top (b) .red (c) #hero (d) .hero
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
9. 9.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) .intro (b) #note (c) div (d) #main
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) #red (b) h1 (c) .intro (d) h2
11. 11.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) #hero (b) div (c) span (d) #red
12. 12.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
13. 13.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
14. 14.True or false: .star is an id selector. (a) False (b) True
15. 15.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="top"> (c) <li class="box"> (d) <h1 class="box">
16. 16.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) #end (b) .logo (c) #big (d) #logo
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) #intro (b) .menu (c) #star (d) #main
18. 18.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) .intro (b) #menu (c) #main (d) .menu
21. 21.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
22. 22.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) #menu (b) .menu (c) #logo (d) span
25. 25.🎯 Which element does the selector .big style? (a) <div class="big"> (b) <div id="big"> (c) <div class="red"> (d) <span class="box">
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #intro (b) .top (c) h1 (d) .note
27. 27.True or false: body is an element selector. (a) False (b) True
28. 28.🎯 Can many elements share the same class? (a) Yes (b) No
29. 29.True or false: img is an element selector. (a) False (b) True
30. 30.True or false: .star is a class selector. (a) True (b) False
31. 31.True or false: .menu is an element selector. (a) True (b) False
32. 32.True or false: li is an id selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) #top (b) #big (c) #hero (d) .hero
34. 34.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #intro (b) #star (c) .menu (d) div
35. 35.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) .box (b) #red (c) #logo (d) span
37. 37.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) #red (b) #intro (c) .red (d) div
38. 38.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="note"> (c) <h2 class="note"> (d) <span id="top">
39. 39.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) span (b) #star (c) #logo (d) .main
40. 40.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #note (b) #end (c) li (d) div

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