CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 571 · 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.🎯 Which CSS selector matches this element?
   <li class="box" id="main">Hello</li> (a) .main (b) div (c) .star (d) li
2. 2.True or false: #hero is a class selector. (a) False (b) True
3. 3.True or false: #logo is an id selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <p class="star" id="end">Hello</p> (a) h1 (b) #hero (c) p (d) .end
5. 5.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
6. 6.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="note" id="top">Hello</h1> (a) .big (b) h2 (c) .top (d) #top
8. 8.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <p class="logo"> (c) <p id="logo"> (d) <h1 class="box">
9. 9.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
10. 10.True or false: .note is an id selector. (a) True (b) False
11. 11.True or false: .big is an element selector. (a) False (b) True
12. 12.True or false: #main is an id selector. (a) False (b) True
13. 13.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) .star (c) #top (d) h1
15. 15.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) #intro (b) p (c) #big (d) .red
16. 16.True or false: #top is a class selector. (a) False (b) True
17. 17.True or false: .note is an element selector. (a) True (b) False
18. 18.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
20. 20.True or false: .menu is an id selector. (a) True (b) False
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.True or false: img is an element selector. (a) False (b) True
23. 23.🎯 Which element does the selector .red style? (a) <p class="star"> (b) <span class="red"> (c) <span class="box"> (d) <span id="red">
24. 24.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) h1 (b) .menu (c) .hero (d) .note
25. 25.True or false: .big is a class selector. (a) True (b) False
26. 26.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) #menu (b) .end (c) p (d) h1
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) h2 (b) .main (c) .menu (d) #logo
28. 28.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <li id="main"> (c) <h1> (d) <p class="star">
29. 29.🎯 Which element does the selector #hero style? (a) <h1 class="hero"> (b) <h1 id="hero"> (c) <h2 class="big"> (d) <h1 id="top">
30. 30.True or false: li is an element selector. (a) False (b) True
31. 31.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <h2> (c) <li class="menu"> (d) <h1 class="menu">
32. 32.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="top"> (c) <p id="intro"> (d) <h1 class="red">
33. 33.🎯 Which element does the selector .big style? (a) <h2 class="big"> (b) <h2 class="red"> (c) <li class="box"> (d) <h2 id="big">
34. 34.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) .box (b) #box (c) h1 (d) #logo
35. 35.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="end"> (c) <div class="star"> (d) <li id="logo">
37. 37.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
38. 38.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) h2 (b) #menu (c) #main (d) .note
40. 40.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) #star (b) .intro (c) span (d) p

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