CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 284 · 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 p? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
4. 4.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
5. 5.True or false: .card is a class selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <div class="big" id="top">Hello</div> (a) span (b) div (c) #big (d) .top
7. 7.🎯 Which CSS selector matches this element?
   <div class="menu" id="intro">Hello</div> (a) #menu (b) .note (c) div (d) .intro
8. 8.🎯 Which element does the selector .menu style? (a) <p class="note"> (b) <p id="menu"> (c) <h1 class="big"> (d) <p class="menu">
9. 9.🎯 Can many elements share the same class? (a) No (b) Yes
10. 10.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
11. 11.True or false: .card is an id selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) #top (b) div (c) #hero (d) .box
13. 13.True or false: body is an element selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) #red (b) #hero (c) .box (d) span
15. 15.True or false: .big is a class selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) #menu (b) #end (c) #hero (d) .note
17. 17.🎯 Which element does the selector .red style? (a) <h1 class="red"> (b) <h1 class="box"> (c) <h2 class="star"> (d) <h1 id="red">
18. 18.True or false: #end is a class selector. (a) True (b) False
19. 19.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
20. 20.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
21. 21.True or false: #top is an id selector. (a) True (b) False
22. 22.True or false: body is an id selector. (a) False (b) True
23. 23.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="menu"> (c) <li class="menu"> (d) <div id="end">
24. 24.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #hero (b) #top (c) span (d) #star
26. 26.True or false: #logo is an element selector. (a) False (b) True
27. 27.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
29. 29.🎯 Which element does the selector p style? (a) <p class="star"> (b) <h1> (c) <li id="intro"> (d) <h2 class="star">
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) h2 (b) #end (c) #red (d) h1
31. 31.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) #star (b) h1 (c) .star (d) #hero
32. 32.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) .note (b) .hero (c) .menu (d) #menu
33. 33.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <li> (c) <h2 class="star"> (d) <div class="star">
34. 34.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 Which element does the selector li style? (a) <p id="end"> (b) <span class="menu"> (c) <li class="menu"> (d) <div>
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #main (b) .big (c) h1 (d) h2
37. 37.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #main (b) .box (c) #intro (d) #red
38. 38.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
39. 39.True or false: #logo is an id selector. (a) False (b) True
40. 40.🎯 Which element does the selector div style? (a) <p class="star"> (b) <span> (c) <h1 id="top"> (d) <div class="star">

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