CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 355 · 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="note" id="main">Hello</li> (a) div (b) .big (c) .note (d) #note
2. 2.True or false: #logo is a class selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <p class="star" id="hero">Hello</p> (a) .hero (b) .star (c) h1 (d) .menu
4. 4.🎯 Which element does the selector .box style? (a) <h1 class="box"> (b) <h1 id="box"> (c) <h2 class="menu"> (d) <h1 class="star">
5. 5.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) #box (b) #intro (c) .star (d) div
6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
7. 7.🎯 Which CSS selector matches this element?
   <p class="menu" id="top">Hello</p> (a) h1 (b) .note (c) .menu (d) #intro
8. 8.True or false: #logo is an id selector. (a) True (b) False
9. 9.True or false: #main is a class selector. (a) False (b) True
10. 10.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
11. 11.🎯 Which element does the selector #hero style? (a) <span class="red"> (b) <div class="hero"> (c) <div id="top"> (d) <div id="hero">
12. 12.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
14. 14.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
15. 15.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) h1 (b) .intro (c) #main (d) p
16. 16.🎯 Can many elements share the same class? (a) Yes (b) No
17. 17.True or false: img is an element selector. (a) True (b) False
18. 18.True or false: #main is an id selector. (a) False (b) True
19. 19.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) li (b) .big (c) #end (d) #logo
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) .box (b) li (c) #main (d) #red
22. 22.True or false: h1 is a class selector. (a) True (b) False
23. 23.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) #logo (b) h2 (c) .star (d) .box
25. 25.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
26. 26.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <p class="note"> (c) <h1 class="big"> (d) <p class="menu">
27. 27.True or false: p is an element selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) .star (b) .hero (c) .box (d) h1
29. 29.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) div (b) span (c) #hero (d) #red
30. 30.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) #main (b) .menu (c) #intro (d) .intro
31. 31.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) #top (b) .top (c) .box (d) #intro
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #logo (b) .main (c) .red (d) #main
33. 33.🎯 Which element does the selector #intro style? (a) <h2 class="red"> (b) <h1 id="intro"> (c) <h1 id="main"> (d) <h1 class="intro">
34. 34.True or false: h1 is an element selector. (a) False (b) True
35. 35.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <h2 id="hero"> (c) <li class="menu"> (d) <h2 id="end">
36. 36.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
37. 37.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="box"> (c) <div class="red"> (d) <span class="star">
38. 38.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which element does the selector div style? (a) <p class="menu"> (b) <span> (c) <div class="menu"> (d) <h1 id="intro">
40. 40.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) .box (b) div (c) #logo (d) .star

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