CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 970 · 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?
   <span class="big" id="hero">Hello</span> (a) #hero (b) .hero (c) p (d) #big
2. 2.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="red" id="logo">Hello</h2> (a) h2 (b) #red (c) li (d) .logo
4. 4.🎯 Which element does the selector span style? (a) <p> (b) <span class="menu"> (c) <h1 class="menu"> (d) <h2 id="end">
5. 5.True or false: .star is a class selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <p class="star" id="top">Hello</p> (a) #intro (b) .top (c) #top (d) .menu
7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
9. 9.🎯 Which CSS selector matches this element?
   <div class="red" id="logo">Hello</div> (a) div (b) .logo (c) #end (d) .box
10. 10.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <li class="note"> (c) <h2 class="star"> (d) <h2 class="menu">
11. 11.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) #note (b) li (c) div (d) .end
12. 12.🎯 Which element does the selector #top style? (a) <div class="big"> (b) <li id="top"> (c) <li class="top"> (d) <li id="intro">
13. 13.🎯 Which element does the selector div style? (a) <p class="red"> (b) <h1 id="main"> (c) <span> (d) <div class="red">
14. 14.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <li class="star"> (c) <h2 id="red"> (d) <h2 class="box">
15. 15.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
16. 16.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
17. 17.True or false: .note is a class selector. (a) False (b) True
18. 18.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="intro"> (c) <li> (d) <h2 class="note">
19. 19.True or false: body is an element selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) .hero (b) #top (c) h1 (d) #box
21. 21.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
22. 22.True or false: #end is an id selector. (a) True (b) False
23. 23.🎯 Which element does the selector #intro style? (a) <div class="star"> (b) <li class="intro"> (c) <li id="main"> (d) <li id="intro">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) h1 (b) #note (c) .main (d) h2
25. 25.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) div (b) .big (c) .red (d) #intro
26. 26.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <div id="intro"> (c) <div class="top"> (d) <span class="box">
27. 27.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) #top (b) div (c) .hero (d) li
28. 28.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) h1 (b) .logo (c) #end (d) #logo
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) #note (b) .note (c) li (d) .intro
30. 30.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) div (b) #top (c) #intro (d) .top
31. 31.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #intro (b) span (c) .intro (d) #red
32. 32.True or false: img is an element selector. (a) False (b) True
33. 33.True or false: h1 is an element selector. (a) True (b) False
34. 34.True or false: #end is a class selector. (a) False (b) True
35. 35.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="note"> (c) <p id="note"> (d) <p class="big">
37. 37.True or false: .card is a class selector. (a) True (b) False
38. 38.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <p id="big"> (c) <p class="big"> (d) <h1 class="box">
39. 39.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #menu (b) .intro (c) #intro (d) #main
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) .red (b) .hero (c) #top (d) h2

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