CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 451 · 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: .card is an id selector. (a) True (b) False
2. 2.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
3. 3.True or false: h1 is an element selector. (a) False (b) True
4. 4.True or false: #top is an element selector. (a) True (b) False
5. 5.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
6. 6.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span class="star"> (c) <span class="box"> (d) <span id="box">
7. 7.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <span id="logo"> (c) <li> (d) <h2 class="red">
8. 8.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="star" id="main">Hello</h1> (a) #logo (b) .menu (c) #main (d) #star
10. 10.True or false: #top is an id selector. (a) False (b) True
11. 11.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) .big (b) #note (c) .note (d) #hero
12. 12.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="note"> (c) <h2 class="red"> (d) <h1 class="big">
13. 13.True or false: #hero is an id selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) .main (b) span (c) div (d) #note
15. 15.🎯 Which element does the selector span style? (a) <p> (b) <span class="red"> (c) <h1 class="red"> (d) <h2 id="intro">
16. 16.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <div id="logo"> (d) <h1 class="big">
17. 17.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) p (b) #main (c) .intro (d) h1
18. 18.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
19. 19.True or false: .big is a class selector. (a) True (b) False
20. 20.🎯 Can many elements share the same class? (a) Yes (b) No
21. 21.🎯 Which element does the selector span style? (a) <span class="star"> (b) <p> (c) <h1 class="star"> (d) <h2 id="main">
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h2 (b) #note (c) h1 (d) .logo
23. 23.True or false: #hero is an element selector. (a) True (b) False
24. 24.True or false: #logo is an element selector. (a) True (b) False
25. 25.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <h2 id="logo"> (c) <span class="box"> (d) <p>
26. 26.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h2 class="note"> (c) <h1> (d) <p class="note">
28. 28.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) #note (b) .logo (c) #end (d) div
29. 29.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) #intro (b) .intro (c) #main (d) h1
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) h2 (b) #star (c) .top (d) h1
32. 32.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <span class="menu"> (c) <span class="note"> (d) <p class="big">
33. 33.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <li class="star"> (c) <h2 id="red"> (d) <h2 class="red">
34. 34.🎯 Which element does the selector .box style? (a) <h2 class="star"> (b) <h2 id="box"> (c) <h2 class="box"> (d) <li class="menu">
35. 35.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h2 class="note"> (c) <h1 id="intro"> (d) <h1 id="top">
36. 36.True or false: img is an element selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) p (b) .logo (c) #end (d) span
38. 38.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) .box (b) p (c) #red (d) .red
39. 39.True or false: .star is a class selector. (a) True (b) False
40. 40.True or false: #end is an id selector. (a) False (b) True

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