CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 889 · 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 sign starts an id selector? (a) & (b) . (c) @ (d) #
2. 2.True or false: li is a class selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <li class="red" id="intro">Hello</li> (a) div (b) #main (c) #intro (d) .box
4. 4.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 Which element does the selector .big style? (a) <h2 class="big"> (b) <h2 class="red"> (c) <h2 id="big"> (d) <li class="box">
6. 6.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
10. 10.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) h1 (b) #menu (c) p (d) .main
11. 11.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
12. 12.True or false: .note is a class selector. (a) True (b) False
13. 13.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
14. 14.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) h1 (b) #note (c) .end (d) p
15. 15.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div id="note"> (d) <div class="note">
17. 17.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .red (b) p (c) .intro (d) #red
18. 18.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) #logo (b) h1 (c) #menu (d) #main
19. 19.True or false: h1 is an element selector. (a) False (b) True
20. 20.True or false: .big is an element selector. (a) False (b) True
21. 21.True or false: body is an element selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) .hero (b) .red (c) #red (d) #top
23. 23.🎯 Which element does the selector .menu style? (a) <span class="menu"> (b) <p class="big"> (c) <span id="menu"> (d) <span class="note">
24. 24.🎯 Which element does the selector #logo style? (a) <div id="logo"> (b) <div id="end"> (c) <span class="star"> (d) <div class="logo">
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) #menu (c) #top (d) #intro
26. 26.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) .big (b) .end (c) h1 (d) .note
28. 28.🎯 Which element does the selector .big style? (a) <li class="red"> (b) <div class="box"> (c) <li id="big"> (d) <li class="big">
29. 29.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <p class="box"> (c) <span id="big"> (d) <span class="red">
30. 30.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h1 class="intro"> (c) <h1 id="intro"> (d) <h2 class="red">
31. 31.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) #intro (b) #main (c) .intro (d) #star
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) .top (b) .menu (c) h2 (d) .star
33. 33.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
34. 34.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="top"> (c) <h1 class="red"> (d) <span class="red">
35. 35.True or false: .card is a class selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) .top (b) p (c) #intro (d) span
37. 37.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) div (b) span (c) .menu (d) #star
38. 38.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .big (b) .end (c) #note (d) li
39. 39.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
40. 40.🎯 Can many elements share the same class? (a) Yes (b) No

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