CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 570 · 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?
   <h2 class="note" id="main">Hello</h2> (a) #note (b) #main (c) li (d) #logo
2. 2.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="big" id="end">Hello</h2> (a) li (b) .end (c) #big (d) .big
4. 4.🎯 Which CSS selector matches this element?
   <span class="box" id="top">Hello</span> (a) #intro (b) p (c) .top (d) span
5. 5.🎯 Which CSS selector matches this element?
   <div class="big" id="logo">Hello</div> (a) #big (b) div (c) .red (d) #end
6. 6.🎯 Which CSS selector matches this element?
   <div class="menu" id="intro">Hello</div> (a) span (b) .intro (c) div (d) #main
7. 7.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
9. 9.True or false: #hero is an id selector. (a) True (b) False
10. 10.True or false: .star is a class selector. (a) True (b) False
11. 11.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
12. 12.True or false: li is an element selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) #logo (b) .note (c) li (d) #main
14. 14.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) #main (b) #intro (c) .menu (d) .intro
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
16. 16.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) .menu (b) #hero (c) #star (d) p
17. 17.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) #main (b) .note (c) #menu (d) #logo
18. 18.🎯 Which element does the selector span style? (a) <h2 id="intro"> (b) <h1 class="star"> (c) <p> (d) <span class="star">
19. 19.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #logo (b) .main (c) #note (d) #main
20. 20.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <div id="hero"> (c) <li class="big"> (d) <h2>
21. 21.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) .red (b) div (c) .logo (d) #red
22. 22.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) .menu (b) #main (c) #intro (d) .intro
23. 23.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Can many elements share the same class? (a) No (b) Yes
25. 25.True or false: .big is an id selector. (a) True (b) False
26. 26.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
27. 27.True or false: #end is an id selector. (a) False (b) True
28. 28.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
29. 29.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
30. 30.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) .top (b) .note (c) #top (d) #intro
31. 31.🎯 Which element does the selector p style? (a) <li id="top"> (b) <p class="note"> (c) <h2 class="note"> (d) <h1>
32. 32.🎯 Which element does the selector #top style? (a) <p class="menu"> (b) <span id="top"> (c) <span id="intro"> (d) <span class="top">
33. 33.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #main (b) #red (c) .red (d) .intro
34. 34.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
35. 35.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <div id="end"> (c) <h2> (d) <h1 class="menu">
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) li (b) h2 (c) .logo (d) .star
37. 37.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <p class="box"> (c) <h1 class="menu"> (d) <p id="box">
38. 38.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="intro"> (c) <div class="box"> (d) <li id="main">
39. 39.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) div (b) .red (c) .logo (d) .big
40. 40.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="note"> (c) <div class="red"> (d) <li class="big">

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