CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 776 · 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 #end? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 Can many elements share the same class? (a) Yes (b) No
3. 3.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 Which element does the selector div style? (a) <span> (b) <p class="note"> (c) <div class="note"> (d) <h1 id="hero">
5. 5.True or false: #top is a class selector. (a) False (b) True
6. 6.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <h2 class="red"> (c) <li class="box"> (d) <h2 class="big">
7. 7.🎯 Which CSS selector matches this element?
   <div class="big" id="intro">Hello</div> (a) #main (b) div (c) .intro (d) span
8. 8.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which element does the selector .star style? (a) <li class="star"> (b) <li id="star"> (c) <li class="menu"> (d) <div class="note">
10. 10.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
11. 11.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .main (b) span (c) #red (d) .red
12. 12.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .big (b) #big (c) .red (d) span
13. 13.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
14. 14.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <p id="top"> (c) <p id="hero"> (d) <h1 class="box">
15. 15.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div class="big"> (c) <div class="red"> (d) <div id="big">
16. 16.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
17. 17.True or false: .menu is a class selector. (a) False (b) True
18. 18.True or false: #end is an id selector. (a) False (b) True
19. 19.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #intro (b) .top (c) p (d) h1
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) #top (b) #big (c) h2 (d) .hero
22. 22.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
23. 23.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) .star (c) p (d) h1
24. 24.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .red (b) #red (c) #main (d) .box
25. 25.True or false: .big is a class selector. (a) False (b) True
26. 26.True or false: .star is a class selector. (a) True (b) False
27. 27.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) li (b) #logo (c) .main (d) #big
28. 28.True or false: #main is an id selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) #logo (b) h1 (c) #big (d) .big
30. 30.True or false: .menu is an id selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) #top (b) .box (c) .hero (d) #box
32. 32.True or false: #end is an element selector. (a) True (b) False
33. 33.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
34. 34.True or false: p is an element selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) h2 (b) .big (c) #logo (d) h1
36. 36.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <li class="star"> (c) <h2> (d) <div id="logo">
37. 37.True or false: li is an id selector. (a) True (b) False
38. 38.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <h2> (c) <h1 class="big"> (d) <div id="logo">
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) #end (b) .big (c) h2 (d) .logo
40. 40.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector

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