CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 907 · 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 .star? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="box" id="hero">Hello</h1> (a) .star (b) #top (c) .hero (d) h1
4. 4.True or false: #end is an id selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <li class="note" id="main">Hello</li> (a) .big (b) li (c) .main (d) #note
6. 6.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
7. 7.True or false: #hero is a class selector. (a) False (b) True
8. 8.True or false: #end is a class selector. (a) True (b) False
9. 9.True or false: img is an element selector. (a) False (b) True
10. 10.True or false: .star is a class selector. (a) True (b) False
11. 11.🎯 Which element does the selector div style? (a) <div class="red"> (b) <p class="red"> (c) <span> (d) <h1 id="logo">
12. 12.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
13. 13.True or false: .note is a class selector. (a) False (b) True
14. 14.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) .big (b) .intro (c) p (d) span
16. 16.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <p> (d) <h2 id="end">
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) li (b) .end (c) .note (d) #note
18. 18.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) .note (b) .menu (c) .logo (d) #menu
19. 19.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <li class="red"> (c) <div class="star"> (d) <li class="box">
20. 20.True or false: #top is an id selector. (a) True (b) False
21. 21.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
22. 22.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) li (b) #hero (c) .end (d) h2
24. 24.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
25. 25.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) #red (b) p (c) .hero (d) .red
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) .end (b) #menu (c) #end (d) h2
27. 27.True or false: .big is an element selector. (a) True (b) False
28. 28.🎯 Can many elements share the same class? (a) Yes (b) No
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) .hero (b) h2 (c) #star (d) .star
30. 30.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <div class="star"> (c) <span class="note"> (d) <div class="menu">
31. 31.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h1 id="note"> (c) <h2 class="red"> (d) <h1 class="big">
32. 32.🎯 Which element does the selector #logo style? (a) <div class="logo"> (b) <span class="red"> (c) <div id="end"> (d) <div id="logo">
33. 33.True or false: .card is an element selector. (a) True (b) False
34. 34.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <h1 class="big"> (c) <h2> (d) <li class="big">
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) #top (b) h2 (c) .box (d) .hero
36. 36.True or false: .big is a class selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) p (b) #logo (c) #end (d) #menu
38. 38.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .note (b) .intro (c) #main (d) li
39. 39.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <div class="red"> (c) <h2 class="red"> (d) <li>
40. 40.🎯 Which element does the selector #logo style? (a) <li class="note"> (b) <h2 class="logo"> (c) <h2 id="logo"> (d) <h2 id="end">

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