CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 841 · 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 a class selector? (a) @ (b) # (c) . (d) &
2. 2.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 class="hero"> (c) <h1 id="hero"> (d) <h2 class="big">
3. 3.🎯 Which CSS selector matches this element?
   <p class="big" id="logo">Hello</p> (a) h1 (b) .logo (c) p (d) .red
4. 4.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
6. 6.True or false: #end is an id selector. (a) True (b) False
7. 7.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
8. 8.True or false: .card is a class selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="big" id="end">Hello</h1> (a) .red (b) h2 (c) h1 (d) #big
10. 10.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <span class="star"> (c) <div id="red"> (d) <div class="red">
12. 12.True or false: .menu is an element selector. (a) True (b) False
13. 13.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <li class="star"> (c) <div class="note"> (d) <li id="star">
14. 14.🎯 Which element does the selector #intro style? (a) <span id="intro"> (b) <span class="intro"> (c) <p class="big"> (d) <span id="main">
15. 15.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
16. 16.True or false: li is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) .hero (b) .note (c) #top (d) .big
18. 18.True or false: .menu is a class selector. (a) False (b) True
19. 19.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
20. 20.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) p (b) .big (c) #big (d) .red
21. 21.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <span> (c) <div class="note"> (d) <p class="note">
22. 22.True or false: #top is an id selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .red (b) .intro (c) p (d) #big
24. 24.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
25. 25.🎯 Can many elements share the same class? (a) No (b) Yes
26. 26.True or false: .menu is an id selector. (a) True (b) False
27. 27.🎯 Which element does the selector .red style? (a) <div class="star"> (b) <li id="red"> (c) <li class="red"> (d) <li class="box">
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .big (b) .top (c) #big (d) .red
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #main (b) h2 (c) h1 (d) .big
30. 30.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
31. 31.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #red (b) h1 (c) .box (d) p
32. 32.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 id="top"> (c) <h1 class="top"> (d) <h2 class="box">
33. 33.🎯 Which element does the selector p style? (a) <li id="main"> (b) <p class="red"> (c) <h2 class="red"> (d) <h1>
34. 34.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) .note (b) li (c) .end (d) #hero
35. 35.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span id="box"> (c) <span class="box"> (d) <span class="star">
36. 36.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .menu (b) #menu (c) div (d) #main
37. 37.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) span (b) #hero (c) p (d) .end
38. 38.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 Which element does the selector li style? (a) <span class="red"> (b) <p id="hero"> (c) <div> (d) <li class="red">
40. 40.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector

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