CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 197 · 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?
   <li class="star" id="intro">Hello</li> (a) #star (b) div (c) .intro (d) li
2. 2.True or false: .note is a class selector. (a) True (b) False
3. 3.True or false: #top is an element selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <p class="red" id="main">Hello</p> (a) .main (b) h1 (c) #logo (d) p
5. 5.True or false: #main is an element selector. (a) True (b) False
6. 6.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <div class="menu"> (c) <li> (d) <h2 class="menu">
7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
8. 8.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="red" id="end">Hello</h1> (a) #end (b) #hero (c) .end (d) h2
10. 10.True or false: .star is an id selector. (a) False (b) True
11. 11.True or false: p is an id selector. (a) False (b) True
12. 12.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
13. 13.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
14. 14.True or false: #logo is an element selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) .main (b) span (c) .note (d) #logo
16. 16.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) #top (b) .menu (c) p (d) span
17. 17.🎯 Which CSS selector matches this element?
    <div class="menu" id="logo">Hello</div> (a) #menu (b) #logo (c) .logo (d) #end
18. 18.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
19. 19.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #top (b) p (c) h1 (d) #red
20. 20.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
21. 21.True or false: #hero is a class selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #main (b) .red (c) #red (d) .intro
23. 23.True or false: #logo is an id selector. (a) False (b) True
24. 24.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <p class="menu"> (c) <span id="end"> (d) <span class="end">
25. 25.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
26. 26.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) #menu (b) span (c) .logo (d) .note
27. 27.🎯 Which element does the selector li style? (a) <div> (b) <span class="note"> (c) <p id="end"> (d) <li class="note">
28. 28.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <h2> (c) <h1 class="star"> (d) <div id="top">
29. 29.🎯 Which element does the selector span style? (a) <p> (b) <span class="big"> (c) <h2 id="hero"> (d) <h1 class="big">
30. 30.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .big (b) #top (c) #note (d) .top
31. 31.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) .hero (b) .box (c) #red (d) #hero
32. 32.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which element does the selector #main style? (a) <div class="big"> (b) <li id="logo"> (c) <li id="main"> (d) <li class="main">
34. 34.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) p (b) .top (c) #intro (d) #red
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) .end (b) #end (c) #hero (d) .box
36. 36.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <li id="top"> (c) <div class="big"> (d) <li class="top">
37. 37.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
38. 38.🎯 Which element does the selector #hero style? (a) <div id="hero"> (b) <div class="hero"> (c) <span class="red"> (d) <div id="top">
39. 39.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) #main (b) p (c) #logo (d) .main
40. 40.True or false: .star is an element selector. (a) True (b) False

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