CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 372 · 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?
   <p class="note" id="top">Hello</p> (a) p (b) #intro (c) .big (d) #note
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="big" id="top">Hello</h1> (a) #big (b) h2 (c) .top (d) .big
3. 3.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
4. 4.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="star" id="top">Hello</h1> (a) #top (b) .menu (c) .top (d) #intro
6. 6.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
7. 7.True or false: #hero is an id selector. (a) False (b) True
8. 8.🎯 Which element does the selector .big style? (a) <div class="box"> (b) <li class="red"> (c) <li id="big"> (d) <li class="big">
9. 9.True or false: h1 is an element selector. (a) True (b) False
10. 10.🎯 Can many elements share the same class? (a) No (b) Yes
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #menu (b) #hero (c) .hero (d) .note
12. 12.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
13. 13.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li class="star"> (c) <li id="star"> (d) <li class="menu">
14. 14.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
15. 15.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
17. 17.🎯 Which element does the selector #main style? (a) <span id="logo"> (b) <span class="main"> (c) <span id="main"> (d) <p class="star">
18. 18.True or false: .menu is a class selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) h2 (b) #intro (c) .top (d) .big
20. 20.True or false: .note is an id selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) .box (b) #box (c) .star (d) .end
22. 22.True or false: .star is a class selector. (a) False (b) True
23. 23.True or false: #logo is an id selector. (a) False (b) True
24. 24.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
25. 25.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="star"> (c) <li class="star"> (d) <div id="logo">
26. 26.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <p class="red"> (c) <span id="note"> (d) <span class="note">
27. 27.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) .box (b) div (c) .red (d) #red
28. 28.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <h1 class="red"> (c) <p class="big"> (d) <p class="note">
29. 29.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #big (b) .intro (c) #intro (d) div
30. 30.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <span class="star"> (c) <p class="note"> (d) <span id="star">
31. 31.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .note (b) #note (c) #logo (d) .big
33. 33.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span class="top"> (c) <span id="top"> (d) <p class="note">
34. 34.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #note (b) #logo (c) .main (d) .note
35. 35.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) #end (b) h1 (c) .end (d) #box
36. 36.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p id="intro"> (c) <h1 class="menu"> (d) <p class="intro">
37. 37.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="end"> (c) <div class="red"> (d) <li id="logo">
38. 38.True or false: #end is a class selector. (a) True (b) False
39. 39.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
40. 40.True or false: #top is an id selector. (a) True (b) False

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