CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 155 · 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 CSS selector matches this element?
   <span class="star" id="main">Hello</span> (a) .main (b) #star (c) span (d) .menu
2. 2.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="logo">Hello</h1> (a) h2 (b) .logo (c) #logo (d) #end
4. 4.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
5. 5.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h2> (c) <div id="hero"> (d) <h1 class="note">
7. 7.🎯 Which CSS selector matches this element?
   <p class="big" id="end">Hello</p> (a) .red (b) .end (c) #end (d) #big
8. 8.🎯 Which CSS selector matches this element?
   <p class="menu" id="main">Hello</p> (a) h1 (b) .note (c) #menu (d) #main
9. 9.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
10. 10.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) div (b) #menu (c) #main (d) #logo
11. 11.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p id="star"> (c) <p class="menu"> (d) <p class="star">
12. 12.True or false: .menu is an element selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) .main (b) div (c) .red (d) #red
14. 14.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <p class="big"> (c) <span id="end"> (d) <span class="end">
15. 15.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <li> (c) <h2 class="big"> (d) <span id="top">
16. 16.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .big (b) h1 (c) #note (d) .note
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #main (b) .intro (c) .box (d) #intro
19. 19.True or false: .note is an id selector. (a) True (b) False
20. 20.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
21. 21.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h1 class="red"> (d) <h2 class="box">
22. 22.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) h1 (b) .star (c) .box (d) #box
23. 23.🎯 Which element does the selector p style? (a) <p class="note"> (b) <li id="top"> (c) <h1> (d) <h2 class="note">
24. 24.True or false: #top is an element selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) #red (b) span (c) .intro (d) #main
26. 26.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <div id="intro"> (d) <h1 class="big">
27. 27.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
28. 28.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .red (b) #intro (c) #main (d) #big
29. 29.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
30. 30.True or false: li is an element selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) div (b) #big (c) #intro (d) .big
32. 32.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #big (b) h2 (c) .big (d) .main
34. 34.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <li> (c) <span id="top"> (d) <div class="star">
36. 36.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p class="red"> (c) <h1 class="star"> (d) <p id="red">
37. 37.🎯 Which element does the selector .box style? (a) <p class="box"> (b) <h1 class="menu"> (c) <p class="star"> (d) <p id="box">
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #big (b) h2 (c) .big (d) .red
39. 39.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) div (b) .logo (c) .menu (d) span
40. 40.True or false: .note is a class selector. (a) False (b) True

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