CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 978 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="red" id="hero">Hello</h2> (a) li (b) .hero (c) .red (d) .box
3. 3.🎯 Which CSS selector matches this element?
   <div class="star" id="intro">Hello</div> (a) span (b) .intro (c) .star (d) #main
4. 4.True or false: #end is an element selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <span class="red" id="top">Hello</span> (a) p (b) span (c) .top (d) .box
6. 6.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h2 class="box"> (c) <h1 id="big"> (d) <h1 class="red">
7. 7.True or false: .big is an element selector. (a) False (b) True
8. 8.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="note"> (c) <div id="hero"> (d) <h1 class="note">
9. 9.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h2 class="red"> (c) <h1> (d) <p class="red">
10. 10.🎯 Which element does the selector #main style? (a) <span class="star"> (b) <div class="main"> (c) <div id="main"> (d) <div id="logo">
11. 11.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) li (b) #main (c) .star (d) .box
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #note (b) .note (c) .main (d) #logo
14. 14.🎯 Which element does the selector #main style? (a) <h2 id="main"> (b) <li class="red"> (c) <h2 id="logo"> (d) <h2 class="main">
15. 15.True or false: .card is an element selector. (a) True (b) False
16. 16.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) #top (b) #red (c) div (d) .hero
18. 18.True or false: h1 is an element selector. (a) False (b) True
19. 19.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h1> (c) <h2 class="big"> (d) <p class="big">
20. 20.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <p class="box"> (c) <h1 class="menu"> (d) <p class="star">
22. 22.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
23. 23.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
24. 24.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) h1 (b) #box (c) #main (d) #intro
25. 25.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) .box (b) .logo (c) #end (d) #box
26. 26.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <div class="box"> (c) <li class="red"> (d) <li id="big">
27. 27.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) p (b) span (c) .menu (d) #star
28. 28.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 Which element does the selector p style? (a) <p class="note"> (b) <h1> (c) <h2 class="note"> (d) <li id="top">
30. 30.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
31. 31.True or false: p is an id selector. (a) False (b) True
32. 32.True or false: p is an element selector. (a) False (b) True
33. 33.🎯 Which element does the selector .red style? (a) <li class="red"> (b) <div class="star"> (c) <li class="box"> (d) <li id="red">
34. 34.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
35. 35.True or false: li is an id selector. (a) False (b) True
36. 36.True or false: .big is a class selector. (a) True (b) False
37. 37.True or false: .card is a class selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) #big (b) .red (c) #end (d) h2
39. 39.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) .star (b) .main (c) .box (d) #logo
40. 40.True or false: #hero is an id selector. (a) False (b) True

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