CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 774 · 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 li? (a) an id selector (b) a class selector (c) an element selector
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 Which element does the selector h2 style? (a) <h2 class="red"> (b) <div class="red"> (c) <li> (d) <span id="top">
4. 4.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
5. 5.True or false: #main is a class selector. (a) False (b) True
6. 6.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
8. 8.🎯 Which element does the selector .note style? (a) <span class="note"> (b) <span class="big"> (c) <p class="red"> (d) <span id="note">
9. 9.🎯 Which CSS selector matches this element?
   <li class="red" id="top">Hello</li> (a) li (b) .top (c) div (d) #red
10. 10.True or false: #end is an id selector. (a) False (b) True
11. 11.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
12. 12.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) #hero (b) #big (c) h1 (d) .hero
13. 13.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
14. 14.True or false: img is an element selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) #intro (b) .star (c) div (d) .menu
16. 16.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <p class="star"> (c) <span class="box"> (d) <span class="red">
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #note (b) #intro (c) .top (d) .note
18. 18.🎯 Which element does the selector li style? (a) <p id="end"> (b) <div> (c) <li class="menu"> (d) <span class="menu">
19. 19.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) .hero (b) #top (c) .menu (d) div
20. 20.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
21. 21.True or false: #main is an id selector. (a) False (b) True
22. 22.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Which element does the selector #logo style? (a) <div class="menu"> (b) <li id="end"> (c) <li id="logo"> (d) <li class="logo">
24. 24.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 class="big"> (c) <h2 class="red"> (d) <h2 id="big">
25. 25.True or false: #hero is a class selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) .star (b) #hero (c) li (d) .hero
27. 27.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
28. 28.True or false: #logo is an id selector. (a) True (b) False
29. 29.True or false: .menu is an id selector. (a) True (b) False
30. 30.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <p class="red"> (c) <h2 class="red"> (d) <h1>
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) h2 (b) #end (c) #box (d) .box
32. 32.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) #star (b) #hero (c) p (d) h1
33. 33.True or false: p is a class selector. (a) True (b) False
34. 34.True or false: .card is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #logo (b) .main (c) h1 (d) h2
36. 36.🎯 Which element does the selector h2 style? (a) <h2 class="box"> (b) <div class="box"> (c) <span id="logo"> (d) <li>
37. 37.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
38. 38.True or false: #top is an element selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) span (b) #red (c) p (d) .top
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #big (b) h2 (c) #logo (d) #end

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