CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 549 · 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?
   <h1 class="menu" id="main">Hello</h1> (a) #main (b) #menu (c) .note (d) .main
2. 2.🎯 Which CSS selector matches this element?
   <li class="note" id="end">Hello</li> (a) #note (b) .note (c) div (d) #hero
3. 3.🎯 Which CSS selector matches this element?
   <div class="big" id="main">Hello</div> (a) .main (b) #logo (c) #main (d) .red
4. 4.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p id="top"> (c) <p class="top"> (d) <h1 class="box">
5. 5.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="hero">Hello</h1> (a) h1 (b) .hero (c) .note (d) #menu
7. 7.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
8. 8.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
11. 11.🎯 Which element does the selector #main style? (a) <span class="big"> (b) <div id="main"> (c) <div id="logo"> (d) <div class="main">
12. 12.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li> (a) #top (b) #hero (c) div (d) #box
13. 13.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.True or false: li is an element selector. (a) True (b) False
16. 16.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) div (b) .logo (c) .menu (d) #logo
18. 18.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #top (b) .top (c) .big (d) #intro
19. 19.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
20. 20.True or false: #top is an id selector. (a) True (b) False
21. 21.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <li class="box"> (c) <h2 class="top"> (d) <h2 id="top">
22. 22.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="big"> (c) <p id="note"> (d) <p class="note">
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .star (b) #intro (c) h2 (d) .top
24. 24.True or false: .note is a class selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) #top (b) p (c) #box (d) .star
26. 26.True or false: #top is an element selector. (a) True (b) False
27. 27.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span id="big"> (c) <span class="red"> (d) <p class="box">
28. 28.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) #main (b) #star (c) span (d) .menu
29. 29.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <p class="star"> (c) <span id="intro"> (d) <span class="top">
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) .box (b) .logo (c) li (d) h2
31. 31.🎯 Which element does the selector .menu style? (a) <p class="big"> (b) <span class="menu"> (c) <span class="note"> (d) <span id="menu">
32. 32.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .big (b) .logo (c) #big (d) .red
33. 33.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h2> (c) <h1 class="big"> (d) <li class="big">
34. 34.🎯 Which element does the selector li style? (a) <div> (b) <span class="menu"> (c) <li class="menu"> (d) <p id="hero">
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) .star (b) #intro (c) h2 (d) #main
36. 36.🎯 Which element does the selector #main style? (a) <p id="main"> (b) <p class="main"> (c) <h1 class="red"> (d) <p id="logo">
37. 37.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <span class="menu"> (c) <h1 class="menu"> (d) <p>
38. 38.True or false: #hero is an id selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) #intro (b) .big (c) .red (d) .top
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) .big (b) .top (c) .note (d) h2

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