CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 496 · 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.True or false: #main is an id selector. (a) True (b) False
2. 2.True or false: p is a class selector. (a) True (b) False
3. 3.🎯 Which element does the selector .menu style? (a) <h2 class="menu"> (b) <li class="big"> (c) <h2 id="menu"> (d) <h2 class="note">
4. 4.🎯 Which element does the selector #hero style? (a) <div class="menu"> (b) <li id="top"> (c) <li id="hero"> (d) <li class="hero">
5. 5.True or false: .big is a class selector. (a) False (b) True
6. 6.True or false: body is an id selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <p class="menu" id="logo">Hello</p> (a) .logo (b) p (c) #menu (d) #end
8. 8.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
10. 10.True or false: .menu is a class selector. (a) False (b) True
11. 11.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) #red (b) .end (c) .box (d) #end
12. 12.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) span (b) .top (c) .note (d) #menu
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) #main (b) .intro (c) li (d) h2
14. 14.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
15. 15.True or false: #end is an id selector. (a) True (b) False
16. 16.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
17. 17.True or false: #top is a class selector. (a) False (b) True
18. 18.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
19. 19.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="red"> (c) <p id="big"> (d) <p class="big">
20. 20.True or false: body is a class selector. (a) True (b) False
21. 21.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="intro"> (c) <p class="box"> (d) <span id="top">
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) .menu (b) #end (c) .star (d) .logo
24. 24.True or false: p is an element selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) h2 (b) h1 (c) .star (d) .intro
26. 26.True or false: .star is a class selector. (a) False (b) True
27. 27.🎯 Which element does the selector h2 style? (a) <div class="menu"> (b) <span id="top"> (c) <li> (d) <h2 class="menu">
28. 28.True or false: #top is an id selector. (a) True (b) False
29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
30. 30.True or false: #logo is a class selector. (a) False (b) True
31. 31.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="red"> (c) <span class="box"> (d) <p class="star">
32. 32.True or false: .menu is an element selector. (a) True (b) False
33. 33.🎯 Which element does the selector #hero style? (a) <p id="top"> (b) <h1 class="menu"> (c) <p id="hero"> (d) <p class="hero">
34. 34.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) #main (b) span (c) .star (d) #star
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) .hero (b) #star (c) h2 (d) h1
37. 37.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) #intro (b) div (c) #menu (d) #main
38. 38.True or false: .note is an element selector. (a) False (b) True
39. 39.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="top"> (c) <h1 id="intro"> (d) <h2 class="note">
40. 40.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) .top (b) #intro (c) span (d) div

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