CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 325 · 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="box" id="intro">Hello</span> (a) .intro (b) span (c) p (d) .star
2. 2.🎯 Which CSS selector matches this element?
   <span class="menu" id="intro">Hello</span> (a) .intro (b) span (c) p (d) #main
3. 3.🎯 Which element does the selector #hero style? (a) <li id="hero"> (b) <li class="hero"> (c) <div class="note"> (d) <li id="top">
4. 4.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
5. 5.True or false: .card is a class selector. (a) False (b) True
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <p id="top"> (c) <h1 class="box"> (d) <p id="hero">
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="star" id="main">Hello</h2> (a) li (b) #star (c) .main (d) h2
9. 9.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
10. 10.🎯 Which element does the selector h2 style? (a) <span id="hero"> (b) <li> (c) <h2 class="star"> (d) <div class="star">
11. 11.🎯 Which element does the selector li style? (a) <p id="logo"> (b) <span class="menu"> (c) <div> (d) <li class="menu">
12. 12.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="star"> (c) <li class="star"> (d) <div id="main">
13. 13.🎯 Which element does the selector .note style? (a) <li class="big"> (b) <li class="note"> (c) <li id="note"> (d) <div class="red">
14. 14.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
15. 15.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <h2> (c) <div id="intro"> (d) <li class="box">
16. 16.True or false: p is an element selector. (a) False (b) True
17. 17.True or false: #top is an element selector. (a) False (b) True
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #top (b) .big (c) #note (d) h2
19. 19.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
21. 21.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) #star (b) li (c) div (d) .menu
22. 22.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <li class="end"> (c) <div class="red"> (d) <li id="end">
23. 23.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <h2 id="intro"> (c) <h2 id="top"> (d) <li class="note">
25. 25.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) #note (b) #top (c) div (d) li
26. 26.True or false: .big is a class selector. (a) False (b) True
27. 27.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <div id="red"> (c) <div class="red"> (d) <span class="star">
28. 28.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
29. 29.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
30. 30.True or false: h1 is an element selector. (a) True (b) False
31. 31.True or false: .menu is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) h2 (b) li (c) #menu (d) .intro
33. 33.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <h2 class="red"> (c) <li> (d) <span id="top">
34. 34.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) span (b) #note (c) .big (d) #main
35. 35.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) div (b) .box (c) span (d) .end
36. 36.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) .big (b) #top (c) div (d) #note
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) h2 (b) #intro (c) .box (d) .top
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) h2 (b) #red (c) #hero (d) .hero
39. 39.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) #menu (b) .note (c) #top (d) .menu
40. 40.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector

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