CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 974 · 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 CSS selector matches this element?
   <span class="note" id="hero">Hello</span> (a) #top (b) span (c) #note (d) .hero
2. 2.True or false: .card is an id selector. (a) True (b) False
3. 3.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
4. 4.🎯 Which element does the selector h1 style? (a) <li class="box"> (b) <div id="logo"> (c) <h1 class="box"> (d) <h2>
5. 5.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="red" id="top">Hello</h2> (a) #red (b) #top (c) .box (d) .top
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) #main (b) #note (c) h2 (d) #intro
8. 8.True or false: .star is a class selector. (a) True (b) False
9. 9.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="red"> (c) <h2 id="intro"> (d) <span class="red">
10. 10.True or false: h1 is an id selector. (a) False (b) True
11. 11.True or false: .big is an id selector. (a) False (b) True
12. 12.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .red (b) #intro (c) #big (d) div
14. 14.True or false: #top is an id selector. (a) False (b) True
15. 15.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="big"> (c) <h1 class="box"> (d) <p class="red">
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) h2 (b) .end (c) #hero (d) h1
18. 18.True or false: #logo is a class selector. (a) True (b) False
19. 19.True or false: .menu is an id selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) p (b) .end (c) #hero (d) #end
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) .note (b) .main (c) #logo (d) #main
22. 22.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
25. 25.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
26. 26.True or false: p is an element selector. (a) True (b) False
27. 27.🎯 Can many elements share the same class? (a) Yes (b) No
28. 28.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <span class="red"> (c) <div class="note"> (d) <div class="big">
29. 29.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
30. 30.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="main"> (c) <h1 class="star"> (d) <li class="star">
31. 31.True or false: li is an element selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) .logo (b) .red (c) #big (d) .big
33. 33.True or false: .menu is a class selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) #menu (b) #hero (c) li (d) #end
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .big (b) .logo (c) .red (d) #big
36. 36.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #note (b) .main (c) #logo (d) div
37. 37.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .main (b) #box (c) .star (d) .box
39. 39.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) #menu (b) .top (c) .note (d) #top

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