CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 385 · 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.True or false: #hero is an id selector. (a) True (b) False
2. 2.True or false: .menu is an element selector. (a) True (b) False
3. 3.True or false: #end is an element selector. (a) False (b) True
4. 4.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
5. 5.True or false: #main is an element selector. (a) True (b) False
6. 6.🎯 Can many elements share the same class? (a) Yes (b) No
7. 7.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
10. 10.True or false: .menu is a class selector. (a) False (b) True
11. 11.🎯 Which element does the selector span style? (a) <span class="big"> (b) <h2 id="main"> (c) <h1 class="big"> (d) <p>
12. 12.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
13. 13.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
14. 14.True or false: #top is a class selector. (a) True (b) False
15. 15.True or false: p is an element selector. (a) True (b) False
16. 16.🎯 Which element does the selector #end style? (a) <h1 id="end"> (b) <h2 class="big"> (c) <h1 class="end"> (d) <h1 id="hero">
17. 17.True or false: img is an id selector. (a) False (b) True
18. 18.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
19. 19.True or false: #end is an id selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) #box (b) li (c) .star (d) .box
21. 21.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) p (c) #intro (d) .big
22. 22.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #red (b) .box (c) p (d) h1
23. 23.🎯 Which element does the selector #end style? (a) <li class="box"> (b) <h2 id="hero"> (c) <h2 id="end"> (d) <h2 class="end">
24. 24.True or false: .menu is an id selector. (a) True (b) False
25. 25.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
26. 26.True or false: #logo is an element selector. (a) False (b) True
27. 27.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) #red (b) #intro (c) .top (d) #top
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) #main (b) #box (c) .box (d) .star
30. 30.🎯 Which element does the selector div style? (a) <span> (b) <p class="box"> (c) <h1 id="top"> (d) <div class="box">
31. 31.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) h2 (b) #main (c) .intro (d) #intro
33. 33.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 id="menu"> (c) <h2 class="menu"> (d) <h2 class="note">
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #top (b) #note (c) #intro (d) .top
35. 35.True or false: .card is a class selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) .note (b) h1 (c) #note (d) .logo
37. 37.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <span class="note"> (c) <span class="menu"> (d) <p class="big">
38. 38.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) #end (b) span (c) .big (d) p
39. 39.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <div class="big"> (c) <span class="box"> (d) <div id="big">
40. 40.True or false: .note is an element selector. (a) False (b) True

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