CSS Worksheet: Selectors Class and Id

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

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