CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 768 · 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 .menu? (a) an id selector (b) an element selector (c) a class selector
2. 2.True or false: .menu is a class selector. (a) False (b) True
3. 3.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
4. 4.True or false: #top is an element selector. (a) True (b) False
5. 5.True or false: h1 is an element selector. (a) True (b) False
6. 6.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
7. 7.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
8. 8.🎯 Can many elements share the same class? (a) No (b) Yes
9. 9.🎯 Which CSS selector matches this element?
   <p class="red" id="end">Hello</p> (a) .end (b) .box (c) #red (d) p
10. 10.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) #top (b) .top (c) p (d) .note
11. 11.True or false: .big is an id selector. (a) False (b) True
12. 12.🎯 Which element does the selector li style? (a) <li class="note"> (b) <div> (c) <p id="end"> (d) <span class="note">
13. 13.True or false: .note is an element selector. (a) False (b) True
14. 14.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h1 class="big"> (c) <h1 id="note"> (d) <h2 class="red">
15. 15.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li id="box"> (c) <li class="star"> (d) <li class="box">
16. 16.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <li id="top"> (c) <h1> (d) <p class="big">
17. 17.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .red (b) #big (c) span (d) div
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) h2 (b) .menu (c) #end (d) #star
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .star (b) #main (c) li (d) #star
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) .box (b) h2 (c) #intro (d) #red
21. 21.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .big (b) .red (c) #end (d) .logo
22. 22.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="note"> (c) <p class="note"> (d) <li id="top">
23. 23.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="top"> (c) <h2 class="red"> (d) <div class="red">
24. 24.True or false: .note is an id selector. (a) False (b) True
25. 25.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
26. 26.True or false: #end is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="box"> (c) <li id="main"> (d) <p class="box">
28. 28.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
30. 30.True or false: li is an element selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) .end (b) .box (c) #box (d) #hero
32. 32.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) #menu (b) #end (c) p (d) .note
33. 33.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <div class="logo"> (c) <span class="box"> (d) <div id="logo">
34. 34.True or false: .card is a class selector. (a) True (b) False
35. 35.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <span> (c) <div class="star"> (d) <p class="star">
36. 36.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #menu (b) #intro (c) .intro (d) h1
37. 37.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
38. 38.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
40. 40.True or false: #main is a class selector. (a) True (b) False

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