CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 920 · 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?
   <h2 class="red" id="logo">Hello</h2> (a) #red (b) .red (c) .box (d) .logo
2. 2.True or false: p is an element selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="big" id="intro">Hello</h1> (a) #main (b) .intro (c) .red (d) #intro
4. 4.🎯 Which CSS selector matches this element?
   <p class="note" id="intro">Hello</p> (a) .big (b) #main (c) h1 (d) p
5. 5.True or false: .card is a class selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) #note (b) #main (c) .intro (d) h1
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="big" id="intro">Hello</h1> (a) h1 (b) h2 (c) #main (d) .intro
8. 8.True or false: #main is a class selector. (a) False (b) True
9. 9.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <h2 id="end"> (c) <li class="menu"> (d) <h2 id="hero">
10. 10.🎯 Which element does the selector li style? (a) <li class="note"> (b) <span class="note"> (c) <div> (d) <p id="main">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) #menu (b) #logo (c) #main (d) h2
12. 12.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <h2 class="note"> (c) <li class="red"> (d) <h2 class="big">
13. 13.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
14. 14.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
15. 15.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="intro"> (c) <h1 class="big"> (d) <p id="top">
16. 16.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <div class="note"> (c) <li class="star"> (d) <li id="star">
17. 17.True or false: #main is an id selector. (a) True (b) False
18. 18.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <li id="main"> (c) <p class="note"> (d) <h1>
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) #menu (c) .menu (d) .top
20. 20.🎯 Which element does the selector #intro style? (a) <h2 class="red"> (b) <h1 id="main"> (c) <h1 id="intro"> (d) <h1 class="intro">
21. 21.🎯 Which sign starts an id selector? (a) # (b) & (c) @ (d) .
22. 22.True or false: .big is an element selector. (a) True (b) False
23. 23.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
24. 24.True or false: .star is an element selector. (a) True (b) False
25. 25.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) .menu (b) #menu (c) .note (d) #end
27. 27.True or false: .card is an id selector. (a) False (b) True
28. 28.True or false: #top is a class selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) li (b) .big (c) #big (d) .end
30. 30.🎯 Can many elements share the same class? (a) No (b) Yes
31. 31.True or false: li is an element selector. (a) False (b) True
32. 32.True or false: .menu is a class selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) span (b) #star (c) .intro (d) #main
34. 34.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <span id="end"> (c) <p class="box"> (d) <span id="hero">
35. 35.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) h1 (b) .end (c) .note (d) .big
36. 36.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li class="note"> (c) <li id="note"> (d) <li class="big">
37. 37.True or false: #hero is a class selector. (a) False (b) True
38. 38.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <div id="intro"> (c) <h2> (d) <h1 class="menu">
39. 39.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
40. 40.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) p (b) #big (c) #hero (d) h1

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