CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 614 · 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.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
2. 2.🎯 Which CSS selector matches this element?
   <li class="red" id="logo">Hello</li> (a) .box (b) .red (c) .logo (d) #end
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="red" id="intro">Hello</h1> (a) #intro (b) .intro (c) h2 (d) #red
4. 4.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
5. 5.🎯 Which element does the selector .red style? (a) <li class="red"> (b) <li id="red"> (c) <li class="box"> (d) <div class="star">
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="main">Hello</h1> (a) .note (b) #menu (c) #logo (d) #main
7. 7.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <p id="main"> (c) <p id="intro"> (d) <h1 class="star">
8. 8.True or false: .note is a class selector. (a) False (b) True
9. 9.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
10. 10.True or false: #logo is an id selector. (a) True (b) False
11. 11.🎯 Can many elements share the same class? (a) No (b) Yes
12. 12.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) #hero (b) #menu (c) .note (d) #end
14. 14.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) .intro (b) p (c) .note (d) .big
16. 16.🎯 Which element does the selector #logo style? (a) <h1 class="menu"> (b) <p class="logo"> (c) <p id="logo"> (d) <p id="end">
17. 17.🎯 Which element does the selector li style? (a) <span class="red"> (b) <p id="top"> (c) <div> (d) <li class="red">
18. 18.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <div class="menu"> (c) <span class="note"> (d) <div class="star">
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) #box (b) .star (c) .box (d) .main
20. 20.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) #note (b) p (c) .big (d) span
21. 21.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
22. 22.True or false: .card is a class selector. (a) False (b) True
23. 23.True or false: .card is an element selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) #note (b) #top (c) .note (d) h1
25. 25.True or false: #hero is an element selector. (a) False (b) True
26. 26.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <li id="top"> (c) <div class="star"> (d) <li class="top">
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) #hero (b) #red (c) .end (d) h2
28. 28.True or false: .big is a class selector. (a) True (b) False
29. 29.True or false: #end is an id selector. (a) True (b) False
30. 30.🎯 Which element does the selector .menu style? (a) <span class="menu"> (b) <span class="note"> (c) <p class="big"> (d) <span id="menu">
31. 31.True or false: .star is an element selector. (a) True (b) False
32. 32.True or false: .menu is a class selector. (a) False (b) True
33. 33.True or false: #main is an id selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) .box (b) .hero (c) #top (d) .red
35. 35.🎯 Which element does the selector #logo style? (a) <h2 class="big"> (b) <h1 id="end"> (c) <h1 class="logo"> (d) <h1 id="logo">
36. 36.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .logo (b) #big (c) div (d) span
37. 37.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <li id="main"> (c) <h1> (d) <p class="star">
38. 38.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <h1 class="red"> (c) <p> (d) <span class="red">
39. 39.True or false: #logo is an element selector. (a) False (b) True
40. 40.True or false: img is an id selector. (a) True (b) False

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