CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 885 · 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 #top style? (a) <h2 class="top"> (b) <h2 id="intro"> (c) <li class="menu"> (d) <h2 id="top">
2. 2.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h1 class="menu"> (c) <h2 class="big"> (d) <h1 class="note">
3. 3.🎯 Which element does the selector .star style? (a) <p class="star"> (b) <p class="menu"> (c) <h1 class="note"> (d) <p id="star">
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="red" id="end">Hello</h1> (a) #red (b) h2 (c) .end (d) .red
5. 5.🎯 Which CSS selector matches this element?
   <li class="note" id="main">Hello</li> (a) #main (b) .big (c) #note (d) #logo
6. 6.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 Can many elements share the same class? (a) Yes (b) No
10. 10.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) #intro (b) .menu (c) div (d) #star
11. 11.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) span (b) #box (c) .star (d) #end
13. 13.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
14. 14.True or false: h1 is an id selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) #intro (b) .red (c) #top (d) #big
16. 16.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
17. 17.True or false: .star is an id selector. (a) True (b) False
18. 18.True or false: .note is an element selector. (a) True (b) False
19. 19.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <li class="box"> (c) <h2 class="red"> (d) <h2 class="big">
20. 20.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
21. 21.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) #star (b) .star (c) .end (d) p
22. 22.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="note"> (c) <h1 class="big"> (d) <h1 id="note">
24. 24.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div id="box"> (c) <span class="menu"> (d) <div class="box">
25. 25.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #logo (b) #box (c) #main (d) .star
26. 26.True or false: .card is an id selector. (a) True (b) False
27. 27.🎯 Which element does the selector span style? (a) <h2 id="end"> (b) <p> (c) <span class="star"> (d) <h1 class="star">
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) .big (b) #big (c) .top (d) #intro
29. 29.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
30. 30.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <h2 id="top"> (c) <li class="red"> (d) <h2 id="hero">
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .main (b) h2 (c) .star (d) .box
32. 32.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
33. 33.🎯 Which element does the selector span style? (a) <span class="box"> (b) <h1 class="box"> (c) <p> (d) <h2 id="hero">
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #intro (b) .big (c) .top (d) #top
35. 35.True or false: #logo is a class selector. (a) False (b) True
36. 36.True or false: #hero is an id selector. (a) False (b) True
37. 37.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="top"> (c) <h1 id="intro"> (d) <h2 class="red">
38. 38.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 class="red"> (c) <h1 class="big"> (d) <h1 id="big">
39. 39.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
40. 40.True or false: #logo is an element selector. (a) False (b) True

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