CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 112 · 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 .note? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) .top (b) #note (c) #intro (d) p
4. 4.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <li class="star"> (c) <div id="hero"> (d) <h2>
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="star" id="logo">Hello</h2> (a) .logo (b) li (c) .menu (d) .star
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
8. 8.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <li class="menu" id="logo">Hello</li> (a) #menu (b) .logo (c) .note (d) .menu
10. 10.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
12. 12.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <p class="box"> (c) <h1 class="star"> (d) <p id="red">
13. 13.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <div class="menu"> (c) <li class="box"> (d) <li class="star">
14. 14.🎯 Which element does the selector .menu style? (a) <h2 id="menu"> (b) <h2 class="menu"> (c) <li class="big"> (d) <h2 class="note">
15. 15.True or false: p is an element selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) #star (b) .intro (c) #intro (d) .menu
17. 17.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <li> (c) <span id="end"> (d) <h2 class="note">
19. 19.True or false: .note is a class selector. (a) False (b) True
20. 20.🎯 Which element does the selector #hero style? (a) <h2 id="hero"> (b) <h2 id="top"> (c) <h2 class="hero"> (d) <li class="red">
21. 21.True or false: .star is a class selector. (a) False (b) True
22. 22.🎯 Which element does the selector .red style? (a) <h1 id="red"> (b) <h1 class="red"> (c) <h1 class="box"> (d) <h2 class="star">
23. 23.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
24. 24.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #menu (b) h1 (c) #hero (d) .hero
25. 25.True or false: body is an element selector. (a) False (b) True
26. 26.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <h1 class="menu"> (c) <p class="intro"> (d) <p id="main">
27. 27.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) span (b) .menu (c) #star (d) p
30. 30.True or false: #main is a class selector. (a) False (b) True
31. 31.True or false: #logo is an id selector. (a) True (b) False
32. 32.🎯 Which element does the selector span style? (a) <h1 class="red"> (b) <span class="red"> (c) <h2 id="end"> (d) <p>
33. 33.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <li class="note"> (c) <h2> (d) <div id="top">
34. 34.True or false: p is an id selector. (a) False (b) True
35. 35.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <div class="menu"> (c) <li> (d) <h2 class="menu">
36. 36.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
37. 37.True or false: p is a class selector. (a) False (b) True
38. 38.True or false: #hero is an id selector. (a) True (b) False
39. 39.🎯 Which element does the selector li style? (a) <p id="top"> (b) <div> (c) <span class="star"> (d) <li class="star">
40. 40.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) #logo (b) .main (c) #menu (d) .menu

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