CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 62 · 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: img is an element selector. (a) False (b) True
2. 2.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) h1 (b) #top (c) #note (d) .big
5. 5.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 Which element does the selector #main style? (a) <h2 id="logo"> (b) <li class="note"> (c) <h2 class="main"> (d) <h2 id="main">
7. 7.🎯 Which element does the selector li style? (a) <div> (b) <span class="star"> (c) <li class="star"> (d) <p id="logo">
8. 8.True or false: #main is a class selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="star" id="intro">Hello</h2> (a) .intro (b) .menu (c) #intro (d) #star
10. 10.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <h1 class="box"> (c) <p id="main"> (d) <p id="intro">
11. 11.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #logo (b) .red (c) h2 (d) h1
13. 13.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <p class="note"> (c) <h1> (d) <h2 class="note">
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.🎯 Which element does the selector .menu style? (a) <h2 id="menu"> (b) <li class="big"> (c) <h2 class="note"> (d) <h2 class="menu">
16. 16.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) h1 (b) #end (c) .big (d) #big
17. 17.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
18. 18.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
19. 19.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
21. 21.🎯 Which element does the selector .big style? (a) <li id="big"> (b) <li class="red"> (c) <li class="big"> (d) <div class="box">
22. 22.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <h2> (d) <div id="intro">
23. 23.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) #red (b) div (c) li (d) .end
24. 24.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
26. 26.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="box"> (c) <span class="red"> (d) <p class="star">
27. 27.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="big"> (c) <span id="intro"> (d) <h2 class="big">
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) .end (b) #hero (c) .red (d) .box
29. 29.True or false: #hero is an id selector. (a) False (b) True
30. 30.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
31. 31.🎯 Which element does the selector p style? (a) <p class="menu"> (b) <li id="end"> (c) <h2 class="menu"> (d) <h1>
32. 32.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) h1 (c) .top (d) p
33. 33.True or false: p is an id selector. (a) False (b) True
34. 34.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <h1> (c) <p class="box"> (d) <li id="logo">
35. 35.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
37. 37.True or false: #end is a class selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) #note (b) #hero (c) .big (d) .hero
39. 39.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
40. 40.True or false: .note is an id selector. (a) True (b) False

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