CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 919 · 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 .star? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="note" id="top">Hello</h2> (a) .note (b) #intro (c) #note (d) li
3. 3.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <p class="big"> (c) <h2 class="big"> (d) <h1>
4. 4.🎯 Which CSS selector matches this element?
   <div class="big" id="main">Hello</div> (a) span (b) .big (c) #logo (d) .main
5. 5.True or false: li is an id selector. (a) True (b) False
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="star" id="end">Hello</h1> (a) .end (b) .menu (c) h1 (d) #star
7. 7.True or false: p is an id selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="star" id="logo">Hello</h1> (a) .star (b) #end (c) h2 (d) #star
9. 9.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
10. 10.True or false: .note is an id selector. (a) False (b) True
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) .red (b) #hero (c) h1 (d) #big
12. 12.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) span (b) .intro (c) #main (d) p
13. 13.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="end"> (c) <h2 class="note"> (d) <li>
15. 15.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which element does the selector .menu style? (a) <p class="menu"> (b) <p class="note"> (c) <h1 class="big"> (d) <p id="menu">
17. 17.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <h1> (c) <p class="menu"> (d) <li id="hero">
18. 18.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h1 class="note"> (c) <h2> (d) <li class="note">
20. 20.True or false: #logo is an id selector. (a) True (b) False
21. 21.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 Which element does the selector .red style? (a) <span class="star"> (b) <div class="box"> (c) <div class="red"> (d) <div id="red">
23. 23.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) #intro (c) #top (d) .top
24. 24.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) span (b) #hero (c) #end (d) .note
26. 26.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="note"> (c) <li id="end"> (d) <p class="note">
27. 27.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
28. 28.🎯 Can many elements share the same class? (a) Yes (b) No
29. 29.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) span (b) #menu (c) .menu (d) #intro
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .top (b) #intro (c) .red (d) .big
31. 31.True or false: p is an element selector. (a) False (b) True
32. 32.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
33. 33.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) .intro (b) h1 (c) p (d) #box
34. 34.🎯 Which element does the selector li style? (a) <li class="note"> (b) <p id="top"> (c) <span class="note"> (d) <div>
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h2 (b) .box (c) #logo (d) #box
36. 36.True or false: #main is an id selector. (a) False (b) True
37. 37.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
38. 38.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) .end (b) #big (c) #end (d) div
39. 39.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
40. 40.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5

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