CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 253 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.True or false: .big is a class selector. (a) False (b) True
3. 3.True or false: #end is a class selector. (a) True (b) False
4. 4.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 id="top"> (c) <h2 class="note"> (d) <h1 class="top">
5. 5.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Which CSS selector matches this element?
   <li class="big" id="hero">Hello</li> (a) #top (b) .red (c) #big (d) li
7. 7.🎯 Which CSS selector matches this element?
   <li class="note" id="main">Hello</li> (a) .big (b) #note (c) #logo (d) #main
8. 8.🎯 Which CSS selector matches this element?
   <span class="box" id="top">Hello</span> (a) #top (b) .star (c) #box (d) #intro
9. 9.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
10. 10.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
11. 11.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <p id="end"> (c) <h1 class="big"> (d) <p class="end">
12. 12.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) .main (b) span (c) #star (d) #logo
13. 13.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .end (b) .big (c) .note (d) #hero
14. 14.True or false: .menu is a class selector. (a) True (b) False
15. 15.True or false: .note is an id selector. (a) True (b) False
16. 16.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) #red (b) .logo (c) .box (d) div
18. 18.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .red (b) .big (c) .logo (d) h1
19. 19.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
20. 20.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .intro (b) .big (c) .red (d) p
21. 21.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) #menu (b) #logo (c) #main (d) h1
22. 22.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) div (b) .main (c) #big (d) .red
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) li (b) #intro (c) #big (d) #top
26. 26.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) h1 (b) #box (c) .star (d) #intro
27. 27.True or false: .card is an id selector. (a) True (b) False
28. 28.🎯 Which element does the selector div style? (a) <p class="big"> (b) <div class="big"> (c) <h1 id="logo"> (d) <span>
29. 29.🎯 Which element does the selector .star style? (a) <p class="note"> (b) <span id="star"> (c) <span class="menu"> (d) <span class="star">
30. 30.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <li class="star"> (c) <li class="box"> (d) <div class="menu">
31. 31.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which element does the selector #hero style? (a) <span class="menu"> (b) <div id="top"> (c) <div class="hero"> (d) <div id="hero">
33. 33.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="big"> (c) <p class="big"> (d) <li id="end">
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) .big (b) #hero (c) #note (d) .note
36. 36.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <li class="note"> (c) <h2 class="end"> (d) <h2 id="end">
37. 37.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) .star (b) #end (c) .box (d) .logo
38. 38.🎯 Which element does the selector li style? (a) <span class="box"> (b) <div> (c) <p id="hero"> (d) <li class="box">
39. 39.🎯 Which element does the selector #main style? (a) <h2 class="big"> (b) <h1 class="main"> (c) <h1 id="logo"> (d) <h1 id="main">
40. 40.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #top (b) #note (c) #hero (d) .big

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