CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 547 · 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 #hero? (a) a class selector (b) an id selector (c) an element selector
2. 2.True or false: body is a class selector. (a) False (b) True
3. 3.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li id="star"> (c) <li class="menu"> (d) <li class="star">
4. 4.🎯 Which CSS selector matches this element?
   <p class="red" id="main">Hello</p> (a) #main (b) #red (c) #logo (d) .main
5. 5.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
6. 6.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
10. 10.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <h1 class="note"> (d) <p class="top">
11. 11.🎯 Which element does the selector .red style? (a) <span class="red"> (b) <span id="red"> (c) <p class="star"> (d) <span class="box">
12. 12.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) .top (b) p (c) h1 (d) #intro
13. 13.🎯 Which element does the selector p style? (a) <p class="star"> (b) <h1> (c) <li id="top"> (d) <h2 class="star">
14. 14.True or false: .card is a class selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) .menu (b) li (c) .intro (d) #main
16. 16.True or false: img is a class selector. (a) False (b) True
17. 17.True or false: #end is an id selector. (a) False (b) True
18. 18.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <span class="star"> (c) <p class="note"> (d) <span id="star">
19. 19.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="note"> (c) <li id="top"> (d) <p class="note">
20. 20.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) #end (b) div (c) .menu (d) .logo
21. 21.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <div class="box"> (c) <li class="red"> (d) <li id="big">
22. 22.🎯 Can many elements share the same class? (a) No (b) Yes
23. 23.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 id="hero"> (c) <h2 class="note"> (d) <h1 class="hero">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) .end (b) .box (c) h2 (d) h1
25. 25.True or false: h1 is an element selector. (a) False (b) True
26. 26.True or false: #hero is an element selector. (a) True (b) False
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) li (b) h2 (c) #menu (d) .note
28. 28.True or false: .menu is a class selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) #star (b) .star (c) .menu (d) div
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .red (b) h2 (c) #intro (d) #big
31. 31.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) #end (b) #big (c) .big (d) .red
32. 32.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="main"> (c) <div class="red"> (d) <p class="red">
33. 33.🎯 Which element does the selector #logo style? (a) <p class="red"> (b) <span id="end"> (c) <span id="logo"> (d) <span class="logo">
34. 34.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .big (b) #main (c) .intro (d) #big
35. 35.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) span (b) #big (c) p (d) .red
36. 36.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #top (b) #intro (c) .top (d) #star
37. 37.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) .top (b) #big (c) .big (d) p
38. 38.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) p (b) .logo (c) #big (d) #logo
39. 39.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) .top (b) h2 (c) .note (d) #note

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