CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 443 · 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 img? (a) an id selector (b) a class selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="big" id="top">Hello</h2> (a) #intro (b) #top (c) #big (d) li
3. 3.🎯 Which CSS selector matches this element?
   <p class="star" id="hero">Hello</p> (a) .menu (b) #hero (c) #top (d) .hero
4. 4.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
5. 5.True or false: #top is an element selector. (a) False (b) True
6. 6.🎯 Which element does the selector .red style? (a) <span class="star"> (b) <div class="box"> (c) <div class="red"> (d) <div id="red">
7. 7.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <p id="logo"> (c) <p id="end"> (d) <h1 class="star">
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="logo">Hello</h2> (a) h2 (b) li (c) .note (d) .logo
9. 9.True or false: #main is an id selector. (a) False (b) True
10. 10.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
11. 11.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
12. 12.🎯 Can many elements share the same class? (a) No (b) Yes
13. 13.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) span (b) .note (c) .big (d) #note
14. 14.🎯 Which element does the selector #end style? (a) <div class="star"> (b) <li id="hero"> (c) <li class="end"> (d) <li id="end">
15. 15.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) #box (b) #main (c) span (d) div
16. 16.True or false: .menu is an element selector. (a) True (b) False
17. 17.🎯 Which element does the selector span style? (a) <span class="note"> (b) <p> (c) <h2 id="main"> (d) <h1 class="note">
18. 18.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h1 class="red"> (c) <div id="logo"> (d) <h2>
20. 20.True or false: .note is an id selector. (a) False (b) True
21. 21.True or false: #hero is an id selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .big (b) li (c) #main (d) h2
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) #end (b) #red (c) .box (d) .end
24. 24.True or false: p is an element selector. (a) False (b) True
25. 25.True or false: h1 is an element selector. (a) True (b) False
26. 26.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) p (b) .big (c) #note (d) .top
28. 28.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
29. 29.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <p id="main"> (c) <p class="main"> (d) <h1 class="menu">
31. 31.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) #menu (b) .note (c) .menu (d) .top
33. 33.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) #intro (b) span (c) .box (d) #box
34. 34.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h2 class="red"> (c) <p class="red"> (d) <h1>
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .top (b) #big (c) #intro (d) .big
36. 36.True or false: body is an element selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) #end (b) #logo (c) .red (d) #big
38. 38.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) li (b) .red (c) .big (d) #big
40. 40.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) .top (b) #menu (c) .menu (d) #intro

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