CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 482 · 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?
   <div class="box" id="hero">Hello</div> (a) #box (b) div (c) .star (d) #top
2. 2.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
3. 3.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <h1> (c) <li id="hero"> (d) <p class="big">
4. 4.True or false: #main is a class selector. (a) True (b) False
5. 5.True or false: #main is an id selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <p class="big" id="logo">Hello</p> (a) .logo (b) #end (c) #logo (d) h1
7. 7.🎯 Which CSS selector matches this element?
   <span class="big" id="hero">Hello</span> (a) p (b) #hero (c) .red (d) #top
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="big" id="main">Hello</h2> (a) .red (b) #logo (c) h2 (d) #big
9. 9.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span id="box"> (c) <span class="box"> (d) <span class="star">
10. 10.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) .hero (b) h1 (c) .box (d) p
11. 11.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 Which element does the selector #hero style? (a) <li id="top"> (b) <li class="hero"> (c) <div class="red"> (d) <li id="hero">
14. 14.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
15. 15.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <h1 class="menu"> (c) <span class="menu"> (d) <p>
16. 16.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h1 class="intro"> (c) <h2 class="menu"> (d) <h1 id="intro">
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .main (b) .star (c) h2 (d) #main
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .menu (b) #main (c) li (d) h2
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) #red (b) li (c) .box (d) #end
20. 20.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
21. 21.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <li class="big"> (c) <span class="big"> (d) <div>
24. 24.True or false: .note is an element selector. (a) True (b) False
25. 25.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <li class="red"> (c) <h2 id="note"> (d) <h2 class="note">
26. 26.🎯 Can many elements share the same class? (a) No (b) Yes
27. 27.🎯 Which element does the selector #top style? (a) <span class="menu"> (b) <div id="top"> (c) <div id="intro"> (d) <div class="top">
28. 28.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) .box (b) #logo (c) #red (d) .logo
29. 29.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <span class="big"> (c) <p> (d) <h1 class="big">
30. 30.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) li (b) #top (c) #hero (d) .hero
32. 32.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
34. 34.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) .note (b) #menu (c) .menu (d) .intro
35. 35.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <li id="hero"> (c) <h1> (d) <p class="menu">
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) .red (b) .main (c) #big (d) #main
37. 37.🎯 Which element does the selector div style? (a) <div class="note"> (b) <p class="note"> (c) <span> (d) <h1 id="logo">
38. 38.True or false: #end is an id selector. (a) True (b) False
39. 39.True or false: .card is a class selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) .intro (b) #main (c) #star (d) #intro

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