CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 948 · 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 #intro style? (a) <li class="intro"> (b) <div class="big"> (c) <li id="intro"> (d) <li id="main">
2. 2.True or false: .menu is an element selector. (a) True (b) False
3. 3.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="menu"> (c) <p class="menu"> (d) <li id="main">
4. 4.True or false: #main is a class selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <p class="box" id="intro">Hello</p> (a) #box (b) #intro (c) #main (d) .intro
6. 6.🎯 Which CSS selector matches this element?
   <span class="star" id="logo">Hello</span> (a) span (b) p (c) #end (d) .menu
7. 7.True or false: img is an element selector. (a) False (b) True
8. 8.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
9. 9.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
11. 11.True or false: .card is an id selector. (a) False (b) True
12. 12.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) .hero (b) #menu (c) h1 (d) .menu
14. 14.🎯 Can many elements share the same class? (a) Yes (b) No
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .star (b) #top (c) .top (d) h2
16. 16.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) #hero (b) #menu (c) .end (d) .menu
17. 17.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <li id="top"> (c) <h1> (d) <p class="note">
18. 18.True or false: #main is an id selector. (a) True (b) False
19. 19.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) #star (b) p (c) h1 (d) .intro
20. 20.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <div class="star"> (c) <li id="intro"> (d) <li id="top">
21. 21.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
23. 23.True or false: #end is an id selector. (a) True (b) False
24. 24.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
25. 25.🎯 Which element does the selector li style? (a) <div> (b) <span class="note"> (c) <li class="note"> (d) <p id="intro">
26. 26.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h2> (c) <div id="logo"> (d) <h1 class="note">
27. 27.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) li (b) div (c) .intro (d) #menu
28. 28.True or false: li is an id selector. (a) True (b) False
29. 29.🎯 Which element does the selector #top style? (a) <p class="menu"> (b) <span id="intro"> (c) <span id="top"> (d) <span class="top">
30. 30.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) #menu (b) p (c) #top (d) .top
32. 32.True or false: .star is a class selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) .main (b) h2 (c) li (d) .star
34. 34.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) .red (b) span (c) #intro (d) #big
35. 35.🎯 Which element does the selector #end style? (a) <span id="end"> (b) <span id="hero"> (c) <span class="end"> (d) <p class="box">
36. 36.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
37. 37.True or false: img is an id selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) h2 (b) #intro (c) .menu (d) .intro
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #hero (b) li (c) #note (d) h2
40. 40.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) p (b) .intro (c) .red (d) #big

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