CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 291 · 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 an id selector? (a) . (b) & (c) @ (d) #
2. 2.🎯 Which CSS selector matches this element?
   <span class="red" id="logo">Hello</span> (a) .box (b) .red (c) p (d) #red
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="hero">Hello</h2> (a) #menu (b) #top (c) .hero (d) .menu
4. 4.True or false: img is an element selector. (a) True (b) False
5. 5.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h1 id="logo"> (c) <h2 class="big"> (d) <h1 id="end">
6. 6.True or false: .note is an element selector. (a) False (b) True
7. 7.🎯 Which CSS selector matches this element?
   <p class="star" id="main">Hello</p> (a) #logo (b) .star (c) #star (d) h1
8. 8.🎯 Which CSS selector matches this element?
   <div class="menu" id="intro">Hello</div> (a) .note (b) .intro (c) span (d) .menu
9. 9.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which element does the selector .menu style? (a) <div class="menu"> (b) <span class="big"> (c) <div id="menu"> (d) <div class="note">
11. 11.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
12. 12.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
13. 13.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #note (b) li (c) .big (d) .top
14. 14.True or false: #hero is an id selector. (a) False (b) True
15. 15.True or false: #end is an id selector. (a) True (b) False
16. 16.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <p> (c) <span class="box"> (d) <h2 id="top">
17. 17.True or false: #main is a class selector. (a) True (b) False
18. 18.🎯 Which element does the selector #logo style? (a) <span class="logo"> (b) <span id="end"> (c) <p class="note"> (d) <span id="logo">
19. 19.True or false: li is an element selector. (a) True (b) False
20. 20.True or false: .card is an element selector. (a) True (b) False
21. 21.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
22. 22.True or false: #top is an element selector. (a) True (b) False
23. 23.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) #hero (b) #top (c) p (d) .hero
25. 25.🎯 Which element does the selector #end style? (a) <h1 class="big"> (b) <p id="hero"> (c) <p id="end"> (d) <p class="end">
26. 26.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) .end (b) .big (c) #big (d) .red
27. 27.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 Can many elements share the same class? (a) No (b) Yes
29. 29.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="note"> (c) <h2 class="note"> (d) <li>
30. 30.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <h2> (d) <div id="hero">
31. 31.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
33. 33.True or false: .big is an element selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) h1 (b) .top (c) h2 (d) #intro
35. 35.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) span (b) #intro (c) .top (d) .red
36. 36.🎯 Which element does the selector .star style? (a) <span class="star"> (b) <span class="menu"> (c) <span id="star"> (d) <p class="note">
37. 37.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <h1 class="menu"> (c) <p id="box"> (d) <p class="box">
38. 38.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <h1 class="star"> (c) <h2> (d) <div id="main">
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .top (b) .star (c) .box (d) #intro

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