CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 800 · 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 element does the selector h1 style? (a) <div id="top"> (b) <h1 class="box"> (c) <h2> (d) <li class="box">
2. 2.True or false: #main is an id selector. (a) True (b) False
3. 3.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
5. 5.🎯 Which CSS selector matches this element?
   <span class="star" id="top">Hello</span> (a) #intro (b) p (c) span (d) #star
6. 6.🎯 Which element does the selector .box style? (a) <h2 class="menu"> (b) <h1 class="star"> (c) <h1 class="box"> (d) <h1 id="box">
7. 7.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which CSS selector matches this element?
   <div class="star" id="end">Hello</div> (a) span (b) #star (c) #hero (d) .star
9. 9.True or false: p is an id selector. (a) True (b) False
10. 10.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
12. 12.True or false: .note is a class selector. (a) False (b) True
13. 13.🎯 Can many elements share the same class? (a) Yes (b) No
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2> (a) li (b) .end (c) #end (d) .menu
15. 15.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <span> (c) <p class="big"> (d) <div class="big">
16. 16.🎯 Which element does the selector p style? (a) <h1> (b) <li id="top"> (c) <h2 class="big"> (d) <p class="big">
17. 17.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p class="note"> (c) <p class="menu"> (d) <p id="menu">
18. 18.True or false: li is an element selector. (a) False (b) True
19. 19.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <span> (c) <p class="note"> (d) <div class="note">
20. 20.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
21. 21.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
22. 22.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
23. 23.True or false: #hero is a class selector. (a) True (b) False
24. 24.True or false: .star is an id selector. (a) True (b) False
25. 25.True or false: #end is an element selector. (a) False (b) True
26. 26.True or false: .menu is a class selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) #end (b) .logo (c) .red (d) span
28. 28.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
29. 29.🎯 Which element does the selector li style? (a) <div> (b) <span class="big"> (c) <li class="big"> (d) <p id="intro">
30. 30.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
31. 31.True or false: .big is an element selector. (a) False (b) True
32. 32.True or false: #top is an element selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) .menu (b) #menu (c) #hero (d) div
34. 34.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
36. 36.True or false: .menu is an id selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) #top (b) #intro (c) .red (d) .top
38. 38.🎯 Which element does the selector #hero style? (a) <p id="hero"> (b) <p id="top"> (c) <p class="hero"> (d) <h1 class="menu">
39. 39.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) span (b) #logo (c) #star (d) .star
40. 40.True or false: #logo is an id selector. (a) False (b) True

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