CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 70 · 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: #logo is an id selector. (a) True (b) False
2. 2.🎯 Which CSS selector matches this element?
   <div class="red" id="intro">Hello</div> (a) .box (b) #main (c) #intro (d) span
3. 3.🎯 Which CSS selector matches this element?
   <span class="big" id="intro">Hello</span> (a) #main (b) .red (c) #big (d) #intro
4. 4.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
5. 5.🎯 Which CSS selector matches this element?
   <li class="big" id="hero">Hello</li> (a) #hero (b) .hero (c) div (d) .red
6. 6.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
7. 7.🎯 Which CSS selector matches this element?
   <div class="note" id="top">Hello</div> (a) #top (b) .top (c) #note (d) span
8. 8.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .big (b) h1 (c) h2 (d) .main
11. 11.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) .top (b) #big (c) p (d) #top
12. 12.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) #top (b) .hero (c) .menu (d) span
13. 13.True or false: #logo is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) #hero (b) #big (c) span (d) .red
15. 15.True or false: #hero is an id selector. (a) False (b) True
16. 16.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
17. 17.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) .hero (b) div (c) .menu (d) #hero
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) li (b) h2 (c) .intro (d) #star
19. 19.True or false: p is an element selector. (a) True (b) False
20. 20.True or false: .card is an id selector. (a) False (b) True
21. 21.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <h2 id="hero"> (c) <li class="box"> (d) <h2 id="top">
22. 22.🎯 Which element does the selector .note style? (a) <span class="note"> (b) <p class="red"> (c) <span id="note"> (d) <span class="big">
23. 23.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
24. 24.True or false: #main is an element selector. (a) True (b) False
25. 25.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <h2 class="big"> (c) <h2 id="big"> (d) <li class="box">
26. 26.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <h1 class="red"> (c) <p id="intro"> (d) <p class="intro">
27. 27.🎯 Which element does the selector #main style? (a) <h1 class="star"> (b) <p id="logo"> (c) <p id="main"> (d) <p class="main">
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) .main (b) #logo (c) .box (d) .red
29. 29.True or false: li is a class selector. (a) True (b) False
30. 30.🎯 Which element does the selector #end style? (a) <div class="menu"> (b) <li id="hero"> (c) <li class="end"> (d) <li id="end">
31. 31.True or false: h1 is a class selector. (a) True (b) False
32. 32.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
33. 33.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) .star (b) #end (c) p (d) .logo
34. 34.True or false: #main is an id selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) span (b) .end (c) div (d) #box
36. 36.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="note"> (c) <div id="end"> (d) <li class="note">
37. 37.🎯 Which element does the selector li style? (a) <span class="star"> (b) <div> (c) <li class="star"> (d) <p id="intro">
38. 38.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 class="note"> (c) <li class="red"> (d) <h2 id="note">

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