CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 124 · 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: p is a class selector. (a) True (b) False
2. 2.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
3. 3.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <p class="box"> (c) <span id="big"> (d) <span class="red">
6. 6.🎯 Which CSS selector matches this element?
   <p class="red" id="top">Hello</p> (a) h1 (b) .top (c) .box (d) #top
7. 7.True or false: img is an id selector. (a) False (b) True
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
9. 9.True or false: .card is an id selector. (a) True (b) False
10. 10.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) #note (b) h2 (c) .note (d) .big
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) li (b) #intro (c) .top (d) #top
13. 13.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) .main (b) h2 (c) li (d) #red
15. 15.True or false: body is an id selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) span (b) .menu (c) #main (d) #star
17. 17.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) p (b) .red (c) h1 (d) #big
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) .note (b) #menu (c) #logo (d) #main
19. 19.True or false: img is an element selector. (a) False (b) True
20. 20.True or false: li is an id selector. (a) False (b) True
21. 21.True or false: p is an element selector. (a) False (b) True
22. 22.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <li> (c) <span id="end"> (d) <h2 class="note">
23. 23.🎯 Which element does the selector span style? (a) <span class="note"> (b) <h1 class="note"> (c) <h2 id="main"> (d) <p>
24. 24.True or false: .menu is an element selector. (a) False (b) True
25. 25.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h2 class="box"> (c) <h1 id="top"> (d) <h1 class="top">
26. 26.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
27. 27.True or false: h1 is an element selector. (a) False (b) True
28. 28.True or false: #logo is an id selector. (a) False (b) True
29. 29.True or false: .big is a class selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) .menu (b) .logo (c) .note (d) #menu
31. 31.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) #intro (b) #top (c) #menu (d) span
32. 32.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) .end (b) .star (c) #hero (d) span
33. 33.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div id="box"> (c) <div class="box"> (d) <span class="menu">
34. 34.True or false: .menu is an id selector. (a) True (b) False
35. 35.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
36. 36.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) .note (b) #top (c) .hero (d) #hero
38. 38.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) #big (b) h2 (c) #top (d) .hero
40. 40.🎯 Which element does the selector .red style? (a) <span class="red"> (b) <span class="box"> (c) <p class="star"> (d) <span id="red">

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