CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 772 · 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 h1? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
3. 3.True or false: .card is a class selector. (a) True (b) False
4. 4.True or false: .card is an element selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <li class="big" id="end">Hello</li> (a) #big (b) div (c) #hero (d) li
6. 6.🎯 Which CSS selector matches this element?
   <span class="star" id="logo">Hello</span> (a) #star (b) #end (c) .star (d) p
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="star" id="logo">Hello</h2> (a) #logo (b) .logo (c) #end (d) #star
8. 8.True or false: .menu is a class selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="red" id="logo">Hello</h2> (a) #logo (b) #end (c) li (d) .logo
10. 10.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) h1 (b) #main (c) .main (d) #box
11. 11.🎯 Can many elements share the same class? (a) No (b) Yes
12. 12.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) .note (b) .menu (c) #top (d) #menu
13. 13.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #top (b) span (c) #hero (d) .hero
14. 14.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
15. 15.True or false: .star is a class selector. (a) False (b) True
16. 16.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
18. 18.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 Which element does the selector .star style? (a) <span class="star"> (b) <p class="note"> (c) <span class="menu"> (d) <span id="star">
21. 21.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="intro"> (c) <p id="top"> (d) <h1 class="box">
22. 22.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h2> (c) <h1 class="note"> (d) <li class="note">
23. 23.🎯 Which element does the selector li style? (a) <div> (b) <li class="big"> (c) <span class="big"> (d) <p id="hero">
24. 24.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
25. 25.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) #logo (b) #menu (c) .note (d) .logo
26. 26.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="box"> (c) <p class="box"> (d) <li id="hero">
27. 27.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
28. 28.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) .hero (b) span (c) #top (d) .note
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #top (b) .menu (c) #menu (d) h2
30. 30.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
31. 31.🎯 Which element does the selector .note style? (a) <h2 class="note"> (b) <li class="red"> (c) <h2 class="big"> (d) <h2 id="note">
32. 32.True or false: #top is an id selector. (a) False (b) True
33. 33.True or false: li is an element selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .intro (b) #menu (c) p (d) h1
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) #end (b) .logo (c) #note (d) h2
36. 36.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h2> (c) <h1 class="big"> (d) <li class="big">
37. 37.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <span id="top"> (c) <p class="note"> (d) <span id="hero">
38. 38.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) .top (b) span (c) #intro (d) #star
40. 40.True or false: #hero is a class selector. (a) True (b) False

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