CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 805 · 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?
   <li class="star" id="top">Hello</li> (a) .star (b) .top (c) #intro (d) #star
2. 2.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
3. 3.🎯 Which CSS selector matches this element?
   <p class="big" id="main">Hello</p> (a) p (b) .main (c) #logo (d) h1
4. 4.True or false: #hero is an element selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <li class="star" id="hero">Hello</li> (a) #hero (b) .hero (c) div (d) #star
6. 6.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
7. 7.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
8. 8.🎯 Which CSS selector matches this element?
   <p class="big" id="logo">Hello</p> (a) .big (b) .logo (c) #end (d) h1
9. 9.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
10. 10.True or false: .big is a class selector. (a) False (b) True
11. 11.🎯 Which element does the selector li style? (a) <div> (b) <p id="intro"> (c) <span class="red"> (d) <li class="red">
12. 12.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) .end (b) li (c) .box (d) div
13. 13.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="hero"> (c) <h2 class="note"> (d) <li>
14. 14.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 id="box"> (c) <h2 class="menu"> (d) <h1 class="box">
15. 15.🎯 Which element does the selector #main style? (a) <div id="logo"> (b) <div id="main"> (c) <div class="main"> (d) <span class="big">
16. 16.🎯 Which element does the selector #hero style? (a) <div class="hero"> (b) <div id="top"> (c) <span class="note"> (d) <div id="hero">
17. 17.🎯 Which element does the selector .box style? (a) <div id="box"> (b) <span class="menu"> (c) <div class="star"> (d) <div class="box">
18. 18.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
19. 19.True or false: .note is an element selector. (a) True (b) False
20. 20.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span class="top"> (c) <span id="top"> (d) <p class="note">
21. 21.🎯 Which element does the selector #end style? (a) <li class="note"> (b) <h2 id="hero"> (c) <h2 id="end"> (d) <h2 class="end">
22. 22.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
23. 23.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="main"> (c) <div class="box"> (d) <li id="intro">
25. 25.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) #top (b) .box (c) h2 (d) li
27. 27.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .red (b) span (c) .big (d) #big
28. 28.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) h1 (b) p (c) .hero (d) #top
29. 29.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #note (b) div (c) span (d) .main
30. 30.🎯 Can many elements share the same class? (a) Yes (b) No
31. 31.True or false: li is an element selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) .menu (b) #menu (c) li (d) .hero
33. 33.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) h1 (b) .menu (c) #menu (d) #end
35. 35.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) #star (b) span (c) .menu (d) p
36. 36.True or false: h1 is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) #top (b) #note (c) p (d) #intro
38. 38.True or false: #top is an element selector. (a) False (b) True
39. 39.True or false: p is an element selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #main (b) .intro (c) #note (d) .note

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