CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 833 · 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) No (b) Yes
2. 2.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
3. 3.🎯 Which element does the selector #top style? (a) <div class="top"> (b) <div id="intro"> (c) <div id="top"> (d) <span class="menu">
4. 4.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <li> (c) <span id="end"> (d) <h2 class="note">
5. 5.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Which CSS selector matches this element?
   <p class="note" id="hero">Hello</p> (a) #top (b) .hero (c) #note (d) #hero
7. 7.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 class="red"> (c) <h2 id="big"> (d) <h2 class="big">
8. 8.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
9. 9.True or false: #hero is a class selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) .red (b) .top (c) #intro (d) #top
11. 11.🎯 Which element does the selector p style? (a) <li id="main"> (b) <h2 class="big"> (c) <p class="big"> (d) <h1>
12. 12.🎯 Which element does the selector h2 style? (a) <h2 class="red"> (b) <div class="red"> (c) <li> (d) <span id="main">
13. 13.True or false: #main is an id selector. (a) False (b) True
14. 14.🎯 Which element does the selector li style? (a) <div> (b) <p id="main"> (c) <span class="box"> (d) <li class="box">
15. 15.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) .logo (b) #star (c) #logo (d) #end
16. 16.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <li class="note"> (c) <h2> (d) <div id="top">
17. 17.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) #star (b) .end (c) #hero (d) li
18. 18.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) #hero (b) li (c) #big (d) .end
20. 20.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
21. 21.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
22. 22.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) #box (b) p (c) #intro (d) #main
23. 23.True or false: .note is a class selector. (a) True (b) False
24. 24.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
26. 26.True or false: .card is an id selector. (a) True (b) False
27. 27.True or false: img is a class selector. (a) True (b) False
28. 28.True or false: .star is an id selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .menu (b) #logo (c) div (d) #main
30. 30.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) div (b) span (c) #logo (d) .main
31. 31.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 id="hero"> (c) <h2 class="note"> (d) <h1 class="hero">
32. 32.True or false: #end is an id selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #box (b) #end (c) .logo (d) h2
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .note (b) h2 (c) #note (d) #main
35. 35.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #intro (b) .box (c) #box (d) h1
36. 36.True or false: .card is a class selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) #logo (b) h1 (c) h2 (d) .big
38. 38.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <li class="star"> (c) <h2 class="top"> (d) <h2 id="intro">
40. 40.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector

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