CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 693 · 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.🎯 Can many elements share the same class? (a) No (b) Yes
2. 2.🎯 Which CSS selector matches this element?
   <div class="menu" id="main">Hello</div> (a) #menu (b) .main (c) div (d) .note
3. 3.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
4. 4.🎯 Which CSS selector matches this element?
   <div class="star" id="end">Hello</div> (a) .end (b) div (c) .menu (d) #star
5. 5.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
6. 6.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
7. 7.🎯 Which element does the selector #intro style? (a) <h1 class="note"> (b) <p id="main"> (c) <p class="intro"> (d) <p id="intro">
8. 8.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 Which element does the selector .red style? (a) <li class="box"> (b) <li class="red"> (c) <li id="red"> (d) <div class="star">
10. 10.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
11. 11.True or false: li is an id selector. (a) False (b) True
12. 12.True or false: #hero is an id selector. (a) True (b) False
13. 13.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) span (b) #menu (c) p (d) #end
14. 14.🎯 Which element does the selector #main style? (a) <h2 id="logo"> (b) <li class="box"> (c) <h2 class="main"> (d) <h2 id="main">
15. 15.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) #star (b) .hero (c) li (d) div
16. 16.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <li class="star"> (c) <h2> (d) <h1 class="star">
17. 17.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) span (b) #hero (c) .big (d) #note
18. 18.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) .hero (b) div (c) span (d) #box
19. 19.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) .hero (b) #top (c) #hero (d) .box
20. 20.True or false: #end is an element selector. (a) True (b) False
21. 21.True or false: .note is a class selector. (a) False (b) True
22. 22.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
23. 23.True or false: .star is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <p class="note"> (c) <span id="star"> (d) <span class="star">
25. 25.🎯 Which element does the selector li style? (a) <p id="end"> (b) <li class="note"> (c) <div> (d) <span class="note">
26. 26.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #top (b) .top (c) #intro (d) .big
27. 27.🎯 Which element does the selector #main style? (a) <span class="menu"> (b) <div class="main"> (c) <div id="logo"> (d) <div id="main">
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) #intro (b) .intro (c) h2 (d) #main
29. 29.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .red (b) h2 (c) h1 (d) #big
31. 31.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p id="note"> (c) <p class="note"> (d) <p class="big">
32. 32.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
33. 33.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) #menu (b) .note (c) .end (d) .menu
34. 34.True or false: #main is an element selector. (a) False (b) True
35. 35.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) .star (b) #box (c) p (d) .box
37. 37.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) .hero (b) #red (c) p (d) #hero
38. 38.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .box (b) #red (c) .top (d) #top
39. 39.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) p (b) .logo (c) #big (d) .red
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) #main (b) h1 (c) .star (d) #box

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