CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 338 · 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: .menu is a class selector. (a) True (b) False
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="note" id="end">Hello</h1> (a) h1 (b) #hero (c) h2 (d) #note
3. 3.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
4. 4.🎯 Which element does the selector #logo style? (a) <span class="logo"> (b) <span id="end"> (c) <p class="box"> (d) <span id="logo">
5. 5.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
6. 6.🎯 Which element does the selector h1 style? (a) <h1 class="note"> (b) <h2> (c) <div id="hero"> (d) <li class="note">
7. 7.🎯 Which CSS selector matches this element?
   <div class="note" id="top">Hello</div> (a) #note (b) span (c) .note (d) #intro
8. 8.🎯 Can many elements share the same class? (a) No (b) Yes
9. 9.True or false: img is a class selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .top (b) #red (c) #intro (d) .red
11. 11.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .box (b) #main (c) .star (d) div
12. 12.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <div id="logo"> (d) <h1 class="big">
13. 13.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #hero (b) #box (c) .star (d) h2
16. 16.True or false: .menu is an element selector. (a) False (b) True
17. 17.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p id="note"> (c) <h1 class="red"> (d) <p class="note">
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .logo (b) .note (c) #menu (d) h2
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) .end (b) #note (c) li (d) h2
20. 20.True or false: body is a class selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) #box (b) .star (c) #main (d) #intro
22. 22.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
23. 23.🎯 Which element does the selector div style? (a) <span> (b) <div class="star"> (c) <p class="star"> (d) <h1 id="logo">
24. 24.True or false: #hero is a class selector. (a) True (b) False
25. 25.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
26. 26.True or false: .big is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <span id="top"> (c) <span id="hero"> (d) <p class="menu">
28. 28.True or false: .note is a class selector. (a) False (b) True
29. 29.🎯 Which element does the selector .menu style? (a) <p class="note"> (b) <p id="menu"> (c) <p class="menu"> (d) <h1 class="big">
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) h2 (b) #star (c) .menu (d) #end
31. 31.True or false: #main is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .intro (b) .red (c) #red (d) .box
33. 33.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) span (b) .menu (c) #top (d) #menu
34. 34.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) #big (b) span (c) #main (d) div
35. 35.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) #hero (b) .red (c) .hero (d) span
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) h1 (b) .star (c) #top (d) #box
37. 37.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
38. 38.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h1 (b) .big (c) h2 (d) #note
40. 40.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) span (b) .box (c) #red (d) .red

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