CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 881 · 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.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
2. 2.🎯 Which CSS selector matches this element?
   <div class="menu" id="top">Hello</div> (a) #menu (b) .top (c) #intro (d) #top
3. 3.🎯 Which CSS selector matches this element?
   <div class="red" id="top">Hello</div> (a) .box (b) #red (c) #intro (d) div
4. 4.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="end"> (c) <li id="logo"> (d) <div class="box">
5. 5.🎯 Can many elements share the same class? (a) Yes (b) No
6. 6.🎯 Which element does the selector li style? (a) <p id="logo"> (b) <li class="box"> (c) <div> (d) <span class="box">
7. 7.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which element does the selector .red style? (a) <li class="star"> (b) <h2 id="red"> (c) <h2 class="red"> (d) <h2 class="box">
9. 9.🎯 Which CSS selector matches this element?
   <li class="box" id="end">Hello</li> (a) div (b) .end (c) #end (d) .star
10. 10.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) p (b) #star (c) .top (d) #intro
11. 11.True or false: .card is an id selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) h2 (b) #intro (c) .top (d) .star
13. 13.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="menu"> (c) <span id="main"> (d) <h2 class="menu">
14. 14.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
15. 15.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
16. 16.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <h1 class="menu"> (d) <p class="top">
19. 19.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
20. 20.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) #main (b) .main (c) p (d) #logo
21. 21.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) .red (b) #logo (c) h1 (d) #red
22. 22.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #top (b) .top (c) .star (d) h1
23. 23.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span class="red"> (c) <span id="red"> (d) <span class="box">
24. 24.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <p id="big"> (c) <h1 class="box"> (d) <p class="big">
25. 25.True or false: li is an element selector. (a) True (b) False
26. 26.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which element does the selector p style? (a) <li id="end"> (b) <h2 class="red"> (c) <h1> (d) <p class="red">
28. 28.True or false: .big is an element selector. (a) False (b) True
29. 29.True or false: p is an element selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) #main (b) #intro (c) p (d) #red
31. 31.🎯 Which element does the selector #hero style? (a) <h2 class="note"> (b) <h1 class="hero"> (c) <h1 id="hero"> (d) <h1 id="top">
32. 32.🎯 Which element does the selector .big style? (a) <li id="big"> (b) <div class="box"> (c) <li class="red"> (d) <li class="big">
33. 33.True or false: #top is an id selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #logo (b) .main (c) #main (d) #menu
35. 35.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) #top (b) .menu (c) #hero (d) #star
36. 36.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) #note (b) .big (c) #logo (d) li
37. 37.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <div id="hero"> (c) <h2> (d) <h1 class="star">
38. 38.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) .star (b) #box (c) #end (d) .box
40. 40.True or false: .menu is an element selector. (a) False (b) True

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