CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 369 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="box" id="hero">Hello</h1> (a) #top (b) #hero (c) .hero (d) #box
3. 3.True or false: img is a class selector. (a) True (b) False
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) .intro (b) .note (c) h2 (d) #note
5. 5.True or false: p is an element selector. (a) False (b) True
6. 6.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h1 id="end"> (c) <h2 class="note"> (d) <h1 id="logo">
7. 7.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
8. 8.True or false: .big is a class selector. (a) True (b) False
9. 9.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
11. 11.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
12. 12.True or false: #main is an id selector. (a) True (b) False
13. 13.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) span (b) .box (c) .top (d) #top
15. 15.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #logo (b) h1 (c) .logo (d) #end
16. 16.True or false: #top is an id selector. (a) False (b) True
17. 17.True or false: .menu is an element selector. (a) False (b) True
18. 18.True or false: #end is a class selector. (a) True (b) False
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .big (b) #end (c) h1 (d) .red
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) span (b) .menu (c) p (d) .main
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: li is an element selector. (a) False (b) True
23. 23.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
24. 24.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) #top (c) h1 (d) .top
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) h2 (b) .star (c) #star (d) .menu
26. 26.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) #intro (b) .top (c) span (d) #star
27. 27.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
28. 28.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) .main (b) #box (c) #logo (d) div
29. 29.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #note (b) #end (c) p (d) .logo
30. 30.True or false: #top is an element selector. (a) False (b) True
31. 31.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <h1 class="note"> (c) <p id="intro"> (d) <p class="top">
32. 32.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) .big (b) #top (c) p (d) .red
33. 33.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) .intro (b) #star (c) .star (d) .menu
34. 34.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) span (b) .star (c) .menu (d) #logo
35. 35.True or false: h1 is a class selector. (a) False (b) True
36. 36.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
37. 37.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
38. 38.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li class="big"> (c) <li id="note"> (d) <li class="note">
39. 39.True or false: .card is a class selector. (a) True (b) False
40. 40.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <div class="red"> (c) <span class="star"> (d) <div id="red">

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