CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 973 · 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?
   <h2 class="big" id="end">Hello</h2> (a) #hero (b) .end (c) h2 (d) .red
2. 2.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
3. 3.True or false: .menu is a class selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <div class="menu" id="hero">Hello</div> (a) .note (b) .hero (c) #menu (d) .menu
5. 5.True or false: #top is a class selector. (a) True (b) False
6. 6.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
8. 8.True or false: .big is an element selector. (a) True (b) False
9. 9.🎯 Which element does the selector span style? (a) <span class="note"> (b) <h2 id="intro"> (c) <p> (d) <h1 class="note">
10. 10.🎯 Can many elements share the same class? (a) No (b) Yes
11. 11.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
12. 12.True or false: #hero is a class selector. (a) False (b) True
13. 13.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
14. 14.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
15. 15.True or false: img is a class selector. (a) True (b) False
16. 16.True or false: .menu is an element selector. (a) True (b) False
17. 17.True or false: .note is an id selector. (a) False (b) True
18. 18.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) .box (b) h1 (c) #red (d) .red
19. 19.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) div (b) #intro (c) #big (d) li
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #menu (b) #intro (c) h2 (d) .intro
21. 21.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #box (b) p (c) h1 (d) #main
22. 22.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <h2 class="big"> (c) <div class="big"> (d) <li>
23. 23.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <p class="note"> (c) <h1> (d) <li id="top">
24. 24.True or false: img is an element selector. (a) False (b) True
25. 25.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #menu (b) .hero (c) .note (d) #hero
27. 27.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <div class="star"> (c) <div id="star"> (d) <span class="note">
29. 29.True or false: .big is a class selector. (a) False (b) True
30. 30.🎯 Which element does the selector #main style? (a) <div class="red"> (b) <li class="main"> (c) <li id="main"> (d) <li id="logo">
31. 31.True or false: h1 is an element selector. (a) False (b) True
32. 32.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
33. 33.🎯 Which element does the selector #intro style? (a) <li id="main"> (b) <div class="box"> (c) <li class="intro"> (d) <li id="intro">
34. 34.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 id="top"> (c) <h1 class="top"> (d) <h2 class="red">
35. 35.True or false: li is an id selector. (a) True (b) False
36. 36.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 id="box"> (c) <h2 class="star"> (d) <h2 class="box">
37. 37.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h1 class="red"> (c) <li class="red"> (d) <h2>
38. 38.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) .box (b) .logo (c) h1 (d) p
39. 39.True or false: #hero is an element selector. (a) True (b) False
40. 40.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <p class="big"> (c) <span class="logo"> (d) <span id="logo">

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