CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 206 · 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.🎯 Which CSS selector matches this element?
   <div class="note" id="main">Hello</div> (a) #logo (b) span (c) .big (d) #main
2. 2.🎯 Which CSS selector matches this element?
   <li class="red" id="main">Hello</li> (a) #logo (b) div (c) li (d) #red
3. 3.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
4. 4.True or false: .star is a class selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <div class="red" id="main">Hello</div> (a) span (b) #red (c) .main (d) #main
6. 6.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
7. 7.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
8. 8.True or false: #end is an id selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <span class="red" id="end">Hello</span> (a) #hero (b) .end (c) .box (d) span
10. 10.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) div (b) span (c) .box (d) #hero
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) .top (b) h2 (c) #big (d) #intro
12. 12.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) .big (b) #top (c) #hero (d) #note
13. 13.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
14. 14.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
15. 15.True or false: .star is an id selector. (a) True (b) False
16. 16.🎯 Which element does the selector #hero style? (a) <span id="top"> (b) <span class="hero"> (c) <p class="box"> (d) <span id="hero">
17. 17.True or false: .note is a class selector. (a) False (b) True
18. 18.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <p class="big"> (c) <span> (d) <div class="big">
19. 19.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span id="top"> (c) <p class="box"> (d) <span class="top">
20. 20.🎯 Can many elements share the same class? (a) No (b) Yes
21. 21.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) #intro (b) #main (c) .red (d) #big
22. 22.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="menu"> (c) <p id="star"> (d) <p class="star">
23. 23.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) p (b) h1 (c) #box (d) .main
24. 24.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) .hero (b) span (c) #star (d) div
25. 25.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) .note (b) #hero (c) p (d) .end
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .red (b) #big (c) h1 (d) h2
27. 27.True or false: p is an element selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .intro (b) #star (c) h2 (d) #main
29. 29.🎯 Which element does the selector #main style? (a) <div id="main"> (b) <span class="big"> (c) <div class="main"> (d) <div id="logo">
30. 30.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
31. 31.True or false: #logo is an element selector. (a) True (b) False
32. 32.True or false: img is an element selector. (a) False (b) True
33. 33.True or false: .card is a class selector. (a) False (b) True
34. 34.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 id="intro"> (c) <h2 class="intro"> (d) <li class="box">
35. 35.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
36. 36.🎯 Which element does the selector .red style? (a) <h1 class="red"> (b) <h1 class="box"> (c) <h1 id="red"> (d) <h2 class="star">
37. 37.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) .star (b) .hero (c) #box (d) #hero
38. 38.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <span class="star"> (c) <p class="note"> (d) <span id="star">
39. 39.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
40. 40.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector

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