CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 257 · 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.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) #main (b) .big (c) #intro (d) p
3. 3.True or false: h1 is an id selector. (a) True (b) False
4. 4.🎯 Which CSS selector matches this element?
   <span class="big" id="top">Hello</span> (a) #intro (b) p (c) span (d) .top
5. 5.🎯 Which CSS selector matches this element?
   <li class="big" id="logo">Hello</li> (a) .red (b) #end (c) .logo (d) .big
6. 6.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <span id="hero"> (c) <div class="menu"> (d) <li>
8. 8.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
9. 9.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 class="note"> (c) <h2 id="note"> (d) <li class="red">
10. 10.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
11. 11.True or false: .big is an element selector. (a) True (b) False
12. 12.🎯 Which element does the selector .big style? (a) <div class="big"> (b) <div class="red"> (c) <div id="big"> (d) <span class="box">
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) .hero (b) li (c) #top (d) #hero
14. 14.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) p (b) #star (c) #main (d) .star
15. 15.True or false: .star is an element selector. (a) True (b) False
16. 16.True or false: .big is a class selector. (a) True (b) False
17. 17.True or false: .note is a class selector. (a) True (b) False
18. 18.🎯 Can many elements share the same class? (a) No (b) Yes
19. 19.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) 2 (d) any number
21. 21.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <li> (c) <div class="star"> (d) <h2 class="star">
22. 22.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
23. 23.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) #red (b) .red (c) .top (d) #intro
24. 24.True or false: #top is a class selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) li (b) #menu (c) div (d) #main
26. 26.True or false: li is an element selector. (a) False (b) True
27. 27.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="red"> (c) <li> (d) <h2 class="red">
28. 28.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <div id="end"> (c) <li class="star"> (d) <h2>
29. 29.🎯 Which element does the selector #end style? (a) <span class="box"> (b) <div id="hero"> (c) <div class="end"> (d) <div id="end">
30. 30.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
31. 31.🎯 Which element does the selector #logo style? (a) <h2 id="end"> (b) <h2 class="logo"> (c) <li class="note"> (d) <h2 id="logo">
32. 32.🎯 Which element does the selector p style? (a) <h1> (b) <li id="hero"> (c) <h2 class="big"> (d) <p class="big">
33. 33.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <h1 class="red"> (c) <p class="big"> (d) <p class="note">
34. 34.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
35. 35.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="end"> (c) <li class="note"> (d) <h1 class="note">
36. 36.True or false: #hero is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) .logo (b) #note (c) p (d) .note
38. 38.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #end (b) h1 (c) .box (d) .end
40. 40.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector

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