CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 133 · 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: .card is an id selector. (a) True (b) False
2. 2.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which element does the selector span style? (a) <p> (b) <span class="box"> (c) <h2 id="end"> (d) <h1 class="box">
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="star" id="end">Hello</h2> (a) #star (b) h2 (c) .menu (d) #hero
5. 5.True or false: #top is an id selector. (a) False (b) True
6. 6.True or false: .card is a class selector. (a) True (b) False
7. 7.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which CSS selector matches this element?
   <li class="box" id="end">Hello</li> (a) #end (b) #hero (c) .end (d) .star
9. 9.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
10. 10.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="red"> (c) <span class="box"> (d) <div class="big">
11. 11.True or false: #logo is a class selector. (a) False (b) True
12. 12.True or false: body is a class selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #logo (b) .red (c) h2 (d) .box
14. 14.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) .hero (b) #box (c) .box (d) span
15. 15.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) li (b) #logo (c) #menu (d) .logo
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 id="menu"> (c) <h2 class="menu"> (d) <h2 class="note">
19. 19.True or false: h1 is an element selector. (a) False (b) True
20. 20.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <div class="box"> (c) <span> (d) <p class="box">
21. 21.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span class="box"> (c) <span class="red"> (d) <span id="red">
22. 22.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) #box (b) span (c) div (d) .star
23. 23.True or false: .big is an id selector. (a) False (b) True
24. 24.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
25. 25.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) div (b) .box (c) .logo (d) #box
26. 26.True or false: #main is an id selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .big (b) #intro (c) #note (d) #main
28. 28.True or false: li is an element selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) #main (b) #menu (c) .main (d) h2
30. 30.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
31. 31.🎯 Which element does the selector p style? (a) <p class="red"> (b) <h2 class="red"> (c) <h1> (d) <li id="end">
32. 32.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
33. 33.True or false: .note is a class selector. (a) False (b) True
34. 34.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 id="intro"> (c) <h2 class="intro"> (d) <li class="note">
36. 36.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <h1 class="note"> (c) <p class="star"> (d) <p id="star">
37. 37.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) .logo (b) #logo (c) div (d) #note
39. 39.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5

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