CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 439 · 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: .note is a class selector. (a) False (b) True
2. 2.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <div id="hero"> (c) <li class="note"> (d) <h2>
3. 3.🎯 Which element does the selector span style? (a) <span class="box"> (b) <p> (c) <h2 id="intro"> (d) <h1 class="box">
4. 4.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 Which CSS selector matches this element?
   <p class="red" id="logo">Hello</p> (a) #red (b) #end (c) .logo (d) .red
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="star" id="top">Hello</h2> (a) #top (b) #star (c) #intro (d) .menu
7. 7.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 id="note"> (c) <h2 class="red"> (d) <h1 class="note">
9. 9.True or false: .star is an element selector. (a) True (b) False
10. 10.True or false: li is an id selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .main (b) .note (c) .menu (d) h1
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) h2 (b) #note (c) #intro (d) .big
13. 13.True or false: h1 is an element selector. (a) False (b) True
14. 14.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <p class="big"> (c) <li id="main"> (d) <h1>
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) .red (b) #red (c) #top (d) .box
17. 17.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) #logo (b) .note (c) .menu (d) #menu
20. 20.True or false: p is a class selector. (a) True (b) False
21. 21.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p id="red"> (c) <p class="red"> (d) <h1 class="star">
22. 22.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <p id="note"> (c) <p class="big"> (d) <h1 class="red">
23. 23.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) #star (b) div (c) .end (d) #hero
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h2 (b) #logo (c) h1 (d) #box
25. 25.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
26. 26.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 class="note"> (c) <h2 class="menu"> (d) <h2 id="menu">
28. 28.🎯 Can many elements share the same class? (a) No (b) Yes
29. 29.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
30. 30.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
31. 31.🎯 Which element does the selector .star style? (a) <span id="star"> (b) <span class="menu"> (c) <span class="star"> (d) <p class="note">
32. 32.True or false: .big is an element selector. (a) True (b) False
33. 33.🎯 Which element does the selector .red style? (a) <span class="box"> (b) <p class="star"> (c) <span id="red"> (d) <span class="red">
34. 34.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <div class="box"> (c) <p class="box"> (d) <span>
35. 35.True or false: #logo is an element selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) .intro (b) #main (c) #big (d) #intro
37. 37.True or false: img is an element selector. (a) False (b) True
38. 38.True or false: .card is a class selector. (a) True (b) False
39. 39.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
40. 40.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .big (b) span (c) #top (d) #note

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