CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 424 · 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.True or false: .note is an id selector. (a) False (b) True
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 Which CSS selector matches this element?
   <li class="menu" id="hero">Hello</li> (a) .hero (b) #menu (c) #top (d) li
4. 4.🎯 Which element does the selector #intro style? (a) <h2 class="big"> (b) <h1 class="intro"> (c) <h1 id="intro"> (d) <h1 id="main">
5. 5.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h2 class="big"> (c) <h1 id="menu"> (d) <h1 class="menu">
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="red" id="main">Hello</h2> (a) .box (b) #logo (c) h2 (d) li
7. 7.True or false: .menu is a class selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <span class="red" id="main">Hello</span> (a) p (b) .main (c) .red (d) #red
9. 9.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
10. 10.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <span class="big"> (c) <div class="note"> (d) <div class="menu">
11. 11.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <li class="end"> (c) <div class="big"> (d) <li id="end">
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .star (b) #logo (c) .box (d) #box
14. 14.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <h1 class="menu"> (c) <p id="main"> (d) <p id="logo">
15. 15.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <span> (c) <div class="menu"> (d) <p class="menu">
16. 16.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) #top (b) #menu (c) .note (d) .menu
17. 17.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #main (b) .red (c) .box (d) #red
18. 18.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
19. 19.True or false: .card is an id selector. (a) True (b) False
20. 20.True or false: #logo is an id selector. (a) False (b) True
21. 21.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span class="note"> (c) <span id="note"> (d) <span class="big">
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .star (b) h2 (c) .box (d) #intro
24. 24.🎯 Which element does the selector .menu style? (a) <li id="menu"> (b) <div class="big"> (c) <li class="note"> (d) <li class="menu">
25. 25.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) .top (b) li (c) h2 (d) #intro
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) .box (b) h1 (c) #main (d) #red
28. 28.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) .main (b) .star (c) #main (d) div
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #menu (b) #top (c) .top (d) h2
30. 30.🎯 Which element does the selector h2 style? (a) <div class="star"> (b) <li> (c) <h2 class="star"> (d) <span id="intro">
31. 31.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
33. 33.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p id="note"> (c) <h1 class="red"> (d) <p class="note">
34. 34.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
35. 35.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 class="box"> (c) <li class="star"> (d) <h2 id="red">
36. 36.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) .box (b) #red (c) h1 (d) #hero
38. 38.True or false: body is an element selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) h1 (b) #box (c) .star (d) .box
40. 40.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector

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