CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 740 · 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 sign starts a class selector? (a) & (b) . (c) @ (d) #
2. 2.True or false: body is an element selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) .star (b) div (c) #intro (d) #box
4. 4.🎯 Which element does the selector .box style? (a) <span class="menu"> (b) <div class="star"> (c) <div id="box"> (d) <div class="box">
5. 5.🎯 Which CSS selector matches this element?
   <li class="star" id="top">Hello</li> (a) div (b) li (c) .top (d) .menu
6. 6.🎯 Which CSS selector matches this element?
   <span class="red" id="logo">Hello</span> (a) .logo (b) p (c) .red (d) .box
7. 7.🎯 Which CSS selector matches this element?
   <span class="big" id="logo">Hello</span> (a) span (b) #end (c) .red (d) .logo
8. 8.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Can many elements share the same class? (a) No (b) Yes
10. 10.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
11. 11.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 class="red"> (c) <h2 class="box"> (d) <h1 id="big">
12. 12.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="star"> (c) <p class="menu"> (d) <h1 class="note">
13. 13.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
14. 14.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #red (b) .main (c) .red (d) h2
16. 16.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="top"> (c) <li> (d) <h2 class="note">
17. 17.True or false: #top is an id selector. (a) False (b) True
18. 18.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 Which element does the selector #end style? (a) <span id="end"> (b) <p class="big"> (c) <span class="end"> (d) <span id="hero">
21. 21.True or false: #end is an element selector. (a) False (b) True
22. 22.🎯 Which element does the selector #logo style? (a) <li class="box"> (b) <h2 id="end"> (c) <h2 class="logo"> (d) <h2 id="logo">
23. 23.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .red (b) #end (c) .big (d) h1
24. 24.True or false: .menu is an id selector. (a) True (b) False
25. 25.True or false: p is a class selector. (a) True (b) False
26. 26.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
27. 27.🎯 Which element does the selector li style? (a) <p id="end"> (b) <li class="menu"> (c) <div> (d) <span class="menu">
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) h1 (b) #top (c) #big (d) .hero
29. 29.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) .star (b) p (c) .logo (d) #star
30. 30.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) #logo (b) #menu (c) .main (d) div
31. 31.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="red"> (c) <span id="hero"> (d) <h2 class="red">
33. 33.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #logo (b) h1 (c) .note (d) .big
34. 34.True or false: .note is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .main (b) #menu (c) .note (d) #main
36. 36.True or false: .menu is an element selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #box (b) #hero (c) .end (d) #end
38. 38.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <h2 id="intro"> (d) <li class="menu">
39. 39.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
40. 40.🎯 Which element does the selector li style? (a) <li class="red"> (b) <p id="hero"> (c) <span class="red"> (d) <div>

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