CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 278 · 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: .star is an element selector. (a) False (b) True
2. 2.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
3. 3.🎯 Which CSS selector matches this element?
   <div class="menu" id="hero">Hello</div> (a) #menu (b) .hero (c) .note (d) .menu
4. 4.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
7. 7.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) .intro (b) .big (c) #intro (d) #main
8. 8.🎯 Which CSS selector matches this element?
   <p class="red" id="hero">Hello</p> (a) .box (b) .red (c) #top (d) h1
9. 9.🎯 Which CSS selector matches this element?
   <li class="star" id="end">Hello</li> (a) #hero (b) div (c) .star (d) .end
10. 10.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) #hero (b) .red (c) #end (d) div
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #logo (b) h2 (c) #note (d) li
12. 12.True or false: .big is an id selector. (a) True (b) False
13. 13.True or false: #logo is a class selector. (a) False (b) True
14. 14.True or false: #hero is an id selector. (a) False (b) True
15. 15.True or false: .big is an element selector. (a) False (b) True
16. 16.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <div class="menu"> (c) <span id="logo"> (d) <li>
17. 17.True or false: #top is an element selector. (a) False (b) True
18. 18.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
19. 19.True or false: .card is an element selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #menu (b) #intro (c) #top (d) li
21. 21.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) .hero (b) #red (c) #top (d) .red
22. 22.True or false: body is a class selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) span (b) #intro (c) p (d) .red
24. 24.🎯 Which element does the selector #end style? (a) <h2 class="box"> (b) <h1 id="end"> (c) <h1 class="end"> (d) <h1 id="hero">
25. 25.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <p class="menu"> (c) <span> (d) <h1 id="intro">
26. 26.🎯 Which element does the selector #intro style? (a) <span class="star"> (b) <div class="intro"> (c) <div id="intro"> (d) <div id="main">
27. 27.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Can many elements share the same class? (a) No (b) Yes
31. 31.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 Which element does the selector .star style? (a) <span id="star"> (b) <span class="star"> (c) <span class="menu"> (d) <p class="note">
33. 33.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .big (b) #hero (c) .end (d) li
34. 34.🎯 Which element does the selector span style? (a) <span class="menu"> (b) <h2 id="logo"> (c) <p> (d) <h1 class="menu">
35. 35.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
37. 37.True or false: body is an element selector. (a) False (b) True
38. 38.True or false: #main is an id selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) #end (b) .logo (c) .box (d) #logo
40. 40.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .box (b) .main (c) span (d) div

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