CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 463 · 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.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <span class="star" id="logo">Hello</span> (a) .logo (b) .menu (c) p (d) .star
3. 3.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 Which element does the selector .box style? (a) <h1 class="box"> (b) <h2 class="menu"> (c) <h1 class="star"> (d) <h1 id="box">
5. 5.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
7. 7.True or false: p is an element selector. (a) False (b) True
8. 8.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="note" id="main">Hello</h2> (a) li (b) #main (c) .big (d) .main
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) .hero (b) h2 (c) .red (d) #big
11. 11.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
12. 12.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) #intro (b) .top (c) li (d) #red
13. 13.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p class="menu"> (c) <p class="note"> (d) <p id="menu">
14. 14.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .main (b) #big (c) li (d) #logo
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) h2 (b) #end (c) .red (d) #big
16. 16.🎯 Which element does the selector #main style? (a) <h2 class="big"> (b) <h1 class="main"> (c) <h1 id="logo"> (d) <h1 id="main">
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #star (b) .top (c) .star (d) #intro
19. 19.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .menu (b) #logo (c) h1 (d) .note
20. 20.🎯 Which element does the selector #logo style? (a) <h1 id="end"> (b) <h1 class="logo"> (c) <h2 class="box"> (d) <h1 id="logo">
21. 21.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) .end (b) #hero (c) .note (d) #end
22. 22.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p class="star"> (c) <p class="box"> (d) <p id="box">
24. 24.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) #logo (b) #end (c) .big (d) p
25. 25.True or false: #logo is an id selector. (a) False (b) True
26. 26.🎯 Which element does the selector #end style? (a) <p class="box"> (b) <span id="end"> (c) <span class="end"> (d) <span id="hero">
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) #box (b) li (c) h2 (d) .intro
28. 28.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) #hero (b) div (c) #end (d) #star
29. 29.True or false: h1 is an element selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #intro (b) #top (c) h2 (d) #big
31. 31.True or false: body is a class selector. (a) False (b) True
32. 32.True or false: img is an element selector. (a) False (b) True
33. 33.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <li id="top"> (c) <div class="red"> (d) <li class="top">
34. 34.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
35. 35.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) .hero (b) .big (c) .red (d) #top
36. 36.True or false: li is a class selector. (a) True (b) False
37. 37.True or false: .big is an element selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) #star (b) span (c) .hero (d) .menu
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) li (b) .top (c) #big (d) #top
40. 40.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 class="note"> (c) <li class="red"> (d) <h2 id="note">

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