CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 616 · 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.True or false: .big is a class selector. (a) True (b) False
2. 2.True or false: #top is an element selector. (a) False (b) True
3. 3.True or false: li is an element selector. (a) True (b) False
4. 4.🎯 Which CSS selector matches this element?
   <p class="box" id="logo">Hello</p> (a) .logo (b) p (c) h1 (d) #box
5. 5.True or false: #end is an id selector. (a) False (b) True
6. 6.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) #main (b) span (c) p (d) #note
8. 8.🎯 Which CSS selector matches this element?
   <span class="box" id="hero">Hello</span> (a) #box (b) .star (c) .box (d) #top
9. 9.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
10. 10.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <div class="big"> (c) <li class="end"> (d) <li id="end">
11. 11.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
12. 12.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h1> (c) <h2 class="note"> (d) <p class="note">
13. 13.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
14. 14.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="menu"> (c) <h1 class="note"> (d) <p class="star">
15. 15.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) #intro (b) .red (c) p (d) #big
17. 17.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
18. 18.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 Which element does the selector #main style? (a) <div class="main"> (b) <div id="main"> (c) <div id="logo"> (d) <span class="box">
22. 22.🎯 Which element does the selector #hero style? (a) <h2 class="note"> (b) <h1 id="hero"> (c) <h1 id="top"> (d) <h1 class="hero">
23. 23.True or false: .star is a class selector. (a) True (b) False
24. 24.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector .menu style? (a) <h2 class="menu"> (b) <li class="big"> (c) <h2 class="note"> (d) <h2 id="menu">
26. 26.True or false: .menu is a class selector. (a) True (b) False
27. 27.True or false: body is a class selector. (a) True (b) False
28. 28.🎯 Which element does the selector #intro style? (a) <span class="note"> (b) <div class="intro"> (c) <div id="intro"> (d) <div id="main">
29. 29.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
30. 30.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which element does the selector div style? (a) <p class="star"> (b) <span> (c) <h1 id="logo"> (d) <div class="star">
32. 32.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) #box (b) p (c) .logo (d) span
33. 33.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <h2> (c) <h1 class="big"> (d) <div id="logo">
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) h1 (b) h2 (c) .main (d) #logo
36. 36.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
37. 37.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) #hero (b) h1 (c) .hero (d) #top
38. 38.True or false: p is an id selector. (a) True (b) False
39. 39.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
40. 40.🎯 Which element does the selector .menu style? (a) <h1 class="menu"> (b) <h1 class="note"> (c) <h2 class="big"> (d) <h1 id="menu">

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