CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 531 · 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 element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <div id="intro"> (d) <h1 class="big">
2. 2.True or false: #logo is a class selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <div class="big" id="end">Hello</div> (a) span (b) .red (c) #big (d) #end
4. 4.True or false: p is a class selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="star" id="top">Hello</h1> (a) #intro (b) #star (c) .star (d) h2
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="red" id="logo">Hello</h2> (a) #red (b) #logo (c) .logo (d) .box
7. 7.🎯 Which CSS selector matches this element?
   <div class="big" id="top">Hello</div> (a) .top (b) #big (c) #top (d) #intro
8. 8.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="note"> (c) <h1 class="big"> (d) <h1 id="note">
11. 11.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) #logo (b) div (c) .main (d) #big
12. 12.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
13. 13.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <li id="big"> (c) <li class="red"> (d) <div class="box">
14. 14.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 Can many elements share the same class? (a) No (b) Yes
16. 16.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) h1 (b) .star (c) .end (d) .box
17. 17.True or false: .star is an element selector. (a) False (b) True
18. 18.True or false: h1 is a class selector. (a) True (b) False
19. 19.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #top (b) #hero (c) h1 (d) #menu
20. 20.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
21. 21.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) #top (b) .red (c) #hero (d) p
22. 22.🎯 Which element does the selector #main style? (a) <h1 class="star"> (b) <p id="logo"> (c) <p class="main"> (d) <p id="main">
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) h2 (b) .big (c) #main (d) h1
24. 24.True or false: .note is an id selector. (a) True (b) False
25. 25.🎯 Which element does the selector #top style? (a) <li class="note"> (b) <h2 class="top"> (c) <h2 id="intro"> (d) <h2 id="top">
26. 26.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .intro (b) #intro (c) #big (d) #main
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .big (b) h2 (c) #main (d) .intro
28. 28.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 id="end"> (c) <h2 class="note"> (d) <h1 class="logo">
29. 29.🎯 Which element does the selector .red style? (a) <h1 class="red"> (b) <h1 id="red"> (c) <h1 class="box"> (d) <h2 class="star">
30. 30.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
31. 31.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
32. 32.True or false: #top is an element selector. (a) True (b) False
33. 33.🎯 Which element does the selector .menu style? (a) <li class="menu"> (b) <li class="note"> (c) <li id="menu"> (d) <div class="big">
34. 34.True or false: p is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) div (b) #intro (c) .intro (d) #main
36. 36.True or false: li is an element selector. (a) True (b) False
37. 37.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
38. 38.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h1 id="main"> (c) <h2 class="star"> (d) <h1 class="intro">
39. 39.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) p (b) .hero (c) #big (d) .red
40. 40.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .big (b) #note (c) .main (d) .note

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