CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 572 · 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.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
2. 2.True or false: .menu is an id selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) h2 (b) .hero (c) #top (d) #hero
4. 4.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
5. 5.True or false: body is an id selector. (a) False (b) True
6. 6.🎯 Can many elements share the same class? (a) Yes (b) No
7. 7.🎯 Which CSS selector matches this element?
   <p class="note" id="top">Hello</p> (a) #intro (b) .top (c) #note (d) .note
8. 8.🎯 Which CSS selector matches this element?
   <li class="box" id="end">Hello</li> (a) #box (b) .star (c) .end (d) .box
9. 9.🎯 Which element does the selector li style? (a) <span class="red"> (b) <li class="red"> (c) <p id="end"> (d) <div>
10. 10.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
11. 11.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
12. 12.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) span (b) #box (c) .box (d) #end
14. 14.🎯 Which element does the selector h1 style? (a) <li class="box"> (b) <div id="top"> (c) <h2> (d) <h1 class="box">
15. 15.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) .end (b) h1 (c) #end (d) #box
16. 16.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
17. 17.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) #hero (b) .end (c) #menu (d) .menu
18. 18.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) #intro (b) .intro (c) #main (d) span
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) h1 (b) .red (c) #top (d) p
20. 20.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div id="big"> (c) <div class="big"> (d) <div class="red">
21. 21.True or false: #hero is an element selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) .note (b) .intro (c) #main (d) .menu
23. 23.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
24. 24.True or false: img is a class selector. (a) False (b) True
25. 25.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span class="red"> (c) <p class="box"> (d) <span id="big">
27. 27.True or false: .big is an element selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) .star (b) p (c) #intro (d) #main
29. 29.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
30. 30.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h2 class="note"> (c) <h1 class="main"> (d) <h1 id="logo">
31. 31.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p id="note"> (c) <p class="note"> (d) <p class="big">
32. 32.True or false: #main is a class selector. (a) True (b) False
33. 33.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
34. 34.True or false: li is an id selector. (a) True (b) False
35. 35.True or false: #top is an id selector. (a) True (b) False
36. 36.🎯 Which element does the selector div style? (a) <p class="box"> (b) <div class="box"> (c) <span> (d) <h1 id="logo">
37. 37.True or false: .note is an element selector. (a) False (b) True
38. 38.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <div id="intro"> (d) <h1 class="big">
39. 39.True or false: img is an element selector. (a) True (b) False
40. 40.🎯 Which element does the selector div style? (a) <div class="big"> (b) <p class="big"> (c) <span> (d) <h1 id="intro">

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