CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 69 · 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?
   <div class="star" id="logo">Hello</div> (a) .logo (b) div (c) .menu (d) #end
2. 2.True or false: #hero is an element selector. (a) False (b) True
3. 3.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="top"> (c) <p class="menu"> (d) <div class="menu">
4. 4.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="red"> (c) <h1 class="box"> (d) <p class="big">
5. 5.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <div id="hero"> (c) <li class="note"> (d) <h2>
6. 6.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which CSS selector matches this element?
   <p class="note" id="end">Hello</p> (a) #note (b) #hero (c) .end (d) .note
8. 8.True or false: .star is a class selector. (a) False (b) True
9. 9.True or false: .note is an id selector. (a) True (b) False
10. 10.True or false: p is an id selector. (a) True (b) False
11. 11.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
12. 12.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
13. 13.True or false: #end is an element selector. (a) False (b) True
14. 14.True or false: #logo is a class selector. (a) True (b) False
15. 15.True or false: .note is a class selector. (a) False (b) True
16. 16.True or false: .star is an id selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) #main (b) li (c) #logo (d) .box
18. 18.🎯 Can many elements share the same class? (a) No (b) Yes
19. 19.True or false: .menu is a class selector. (a) True (b) False
20. 20.True or false: li is a class selector. (a) False (b) True
21. 21.True or false: #end is a class selector. (a) False (b) True
22. 22.True or false: #main is an element selector. (a) False (b) True
23. 23.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
24. 24.True or false: h1 is a class selector. (a) True (b) False
25. 25.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <h2 class="menu"> (c) <div class="menu"> (d) <li>
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #big (b) .logo (c) #logo (d) h2
27. 27.True or false: body is an element selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) .intro (b) #red (c) .red (d) span
29. 29.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) #star (b) #logo (c) .main (d) #main
30. 30.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) .end (b) div (c) #hero (d) li
31. 31.True or false: #hero is an id selector. (a) True (b) False
32. 32.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
33. 33.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
34. 34.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
35. 35.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
36. 36.True or false: li is an id selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .end (b) .red (c) .big (d) p
38. 38.True or false: .note is an element selector. (a) False (b) True
39. 39.True or false: .big is an element selector. (a) False (b) True
40. 40.True or false: .card is a class selector. (a) False (b) True

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