CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 898 · 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) Yes (b) No
2. 2.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
3. 3.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
5. 5.True or false: .star is an id selector. (a) False (b) True
6. 6.🎯 Which element does the selector #intro style? (a) <span class="note"> (b) <div id="main"> (c) <div class="intro"> (d) <div id="intro">
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="box" id="intro">Hello</h1> (a) #main (b) .star (c) .box (d) #box
8. 8.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
9. 9.🎯 Which element does the selector #hero style? (a) <h2 class="note"> (b) <h1 class="hero"> (c) <h1 id="top"> (d) <h1 id="hero">
10. 10.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) #end (b) .end (c) .big (d) #hero
11. 11.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <p class="box"> (c) <span class="red"> (d) <span class="big">
12. 12.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) #hero (b) h1 (c) .red (d) #top
14. 14.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #top (b) #hero (c) .hero (d) #note
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) .top (b) .menu (c) .note (d) #menu
16. 16.🎯 Which element does the selector #hero style? (a) <li id="top"> (b) <li id="hero"> (c) <li class="hero"> (d) <div class="menu">
17. 17.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) .end (b) span (c) #note (d) #hero
18. 18.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <span class="note"> (c) <p class="red"> (d) <span id="note">
19. 19.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="top"> (c) <h1 class="note"> (d) <li class="note">
20. 20.True or false: h1 is an element selector. (a) True (b) False
21. 21.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) #hero (b) span (c) #red (d) p
23. 23.🎯 Which element does the selector .menu style? (a) <span class="note"> (b) <span class="menu"> (c) <span id="menu"> (d) <p class="big">
24. 24.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #main (b) .note (c) h1 (d) .big
25. 25.🎯 Which element does the selector #logo style? (a) <li class="note"> (b) <h2 id="end"> (c) <h2 id="logo"> (d) <h2 class="logo">
26. 26.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="menu"> (c) <h1 class="note"> (d) <p class="star">
27. 27.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) span (b) #menu (c) #end (d) .end
28. 28.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) span (b) .box (c) p (d) #red
29. 29.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) #end (b) #hero (c) .big (d) h1
31. 31.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) li (b) .red (c) #end (d) .logo
32. 32.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
33. 33.True or false: li is an element selector. (a) False (b) True
34. 34.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
35. 35.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) #intro (b) .star (c) .box (d) #box
36. 36.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
37. 37.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) #end (b) .box (c) .red (d) #red
38. 38.True or false: .card is a class selector. (a) True (b) False
39. 39.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) #logo (b) h2 (c) .logo (d) #end

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