CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 753 · 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) a class selector (b) an element selector (c) an id selector
2. 2.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
3. 3.True or false: #main is an id selector. (a) False (b) True
4. 4.🎯 Which element does the selector #logo style? (a) <li id="logo"> (b) <li id="end"> (c) <li class="logo"> (d) <div class="box">
5. 5.🎯 Which CSS selector matches this element?
   <li class="big" id="logo">Hello</li> (a) .red (b) #logo (c) .logo (d) #big
6. 6.🎯 Which CSS selector matches this element?
   <li class="menu" id="main">Hello</li> (a) .note (b) #menu (c) #main (d) .main
7. 7.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <li class="main"> (c) <li id="main"> (d) <div class="star">
9. 9.True or false: .big is an id selector. (a) True (b) False
10. 10.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <p class="box"> (c) <span class="big"> (d) <span class="red">
13. 13.True or false: #top is a class selector. (a) False (b) True
14. 14.True or false: #hero is an id selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) div (b) #box (c) .star (d) li
16. 16.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) span (b) .menu (c) .logo (d) .star
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) h2 (b) #intro (c) #box (d) .star
18. 18.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) #intro (b) .star (c) p (d) #star
19. 19.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
20. 20.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="intro"> (c) <span class="big"> (d) <h1 class="big">
21. 21.True or false: img is an id selector. (a) False (b) True
22. 22.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
23. 23.True or false: #logo is an element selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) span (b) .intro (c) #intro (d) #big
25. 25.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) div (b) li (c) .red (d) #intro
26. 26.🎯 Which element does the selector .box style? (a) <span class="box"> (b) <span class="star"> (c) <span id="box"> (d) <p class="menu">
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) .menu (b) .main (c) .note (d) h2
28. 28.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <p id="box"> (c) <h1 class="menu"> (d) <p class="box">
29. 29.True or false: #main is an element selector. (a) True (b) False
30. 30.True or false: #logo is a class selector. (a) True (b) False
31. 31.🎯 Can many elements share the same class? (a) Yes (b) No
32. 32.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .note (b) .big (c) #top (d) #note
33. 33.True or false: #top is an element selector. (a) False (b) True
34. 34.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
35. 35.True or false: #end is an element selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #main (b) .intro (c) #intro (d) .red
37. 37.True or false: .star is a class selector. (a) True (b) False
38. 38.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <h2 class="star"> (c) <div class="star"> (d) <li>
39. 39.True or false: h1 is an element selector. (a) True (b) False
40. 40.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <h1 class="red"> (c) <p> (d) <span class="red">

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