CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 775 · 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?
   <p class="box" id="hero">Hello</p> (a) #box (b) #top (c) #hero (d) .hero
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
4. 4.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which element does the selector #top style? (a) <div class="top"> (b) <div id="intro"> (c) <div id="top"> (d) <span class="red">
6. 6.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
8. 8.🎯 Which CSS selector matches this element?
   <div class="note" id="top">Hello</div> (a) #note (b) #top (c) .big (d) #intro
9. 9.🎯 Which CSS selector matches this element?
   <div class="star" id="end">Hello</div> (a) #star (b) div (c) span (d) .end
10. 10.True or false: h1 is an id selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) #star (b) .star (c) .hero (d) .menu
12. 12.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
13. 13.True or false: li is a class selector. (a) False (b) True
14. 14.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <p class="red"> (c) <span class="top"> (d) <span id="top">
15. 15.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) p (b) #end (c) #logo (d) #menu
16. 16.True or false: img is an element selector. (a) True (b) False
17. 17.True or false: .card is a class selector. (a) False (b) True
18. 18.True or false: #top is a class selector. (a) False (b) True
19. 19.True or false: #end is an element selector. (a) True (b) False
20. 20.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
21. 21.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h2> (c) <h1 class="red"> (d) <li class="red">
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #hero (b) #note (c) .note (d) .big
23. 23.🎯 Which element does the selector .menu style? (a) <h2 class="big"> (b) <h1 id="menu"> (c) <h1 class="note"> (d) <h1 class="menu">
24. 24.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
26. 26.True or false: .big is a class selector. (a) True (b) False
27. 27.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) .top (b) #top (c) .note (d) div
28. 28.True or false: .menu is an element selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) .main (b) span (c) .note (d) .menu
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) .note (b) #menu (c) .hero (d) .menu
31. 31.True or false: #top is an id selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) .red (b) li (c) #big (d) .big
33. 33.🎯 Which element does the selector .menu style? (a) <span class="menu"> (b) <span id="menu"> (c) <span class="note"> (d) <p class="big">
34. 34.True or false: li is an element selector. (a) True (b) False
35. 35.True or false: p is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) #star (b) .star (c) #end (d) .logo
37. 37.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <li class="end"> (c) <li id="end"> (d) <div class="star">
38. 38.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) h1 (b) .main (c) #main (d) #menu
39. 39.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <li class="note"> (c) <h2 class="top"> (d) <h2 id="intro">
40. 40.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h2 class="red"> (c) <h1 class="big"> (d) <h1 id="note">

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