CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 181 · 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: .big is an id selector. (a) False (b) True
2. 2.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Which element does the selector h2 style? (a) <div class="box"> (b) <li> (c) <span id="intro"> (d) <h2 class="box">
4. 4.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
5. 5.True or false: .card is a class selector. (a) False (b) True
6. 6.True or false: .star is a class selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="box" id="main">Hello</h2> (a) .star (b) .box (c) #box (d) .main
8. 8.🎯 Which CSS selector matches this element?
   <div class="box" id="intro">Hello</div> (a) div (b) span (c) .star (d) .intro
9. 9.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
10. 10.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) span (b) #main (c) .intro (d) p
14. 14.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <p id="hero"> (c) <h1 class="box"> (d) <p id="top">
15. 15.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) .main (b) .menu (c) #logo (d) p
16. 16.True or false: #main is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #red (b) h1 (c) .box (d) p
18. 18.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #end (b) .star (c) .end (d) #hero
19. 19.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) #logo (b) #end (c) .logo (d) #box
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) #intro (b) #box (c) h2 (d) .intro
21. 21.🎯 Can many elements share the same class? (a) Yes (b) No
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) #top (b) .big (c) li (d) #big
23. 23.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 Which element does the selector li style? (a) <div> (b) <li class="note"> (c) <span class="note"> (d) <p id="end">
25. 25.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="note"> (c) <h2 class="big"> (d) <h2 id="note">
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) .box (b) #box (c) .star (d) .intro
28. 28.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
29. 29.True or false: .note is an id selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) #box (b) h2 (c) .star (d) .intro
31. 31.🎯 Which element does the selector p style? (a) <p class="note"> (b) <h1> (c) <li id="intro"> (d) <h2 class="note">
32. 32.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) span (b) div (c) .note (d) #menu
33. 33.True or false: #main is an element selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) .intro (b) #intro (c) li (d) #box
35. 35.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
36. 36.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="star"> (c) <h1 class="star"> (d) <div id="hero">
37. 37.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) #main (b) .main (c) #logo (d) .red
38. 38.True or false: .menu is an id selector. (a) True (b) False
39. 39.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="box"> (c) <h2 id="box"> (d) <h2 class="star">
40. 40.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector

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