CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 337 · 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: #hero is an element selector. (a) False (b) True
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="note" id="main">Hello</h2> (a) .big (b) .main (c) li (d) h2
3. 3.True or false: #top is an id selector. (a) False (b) True
4. 4.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <span class="big"> (c) <p class="box"> (d) <span class="red">
5. 5.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
7. 7.🎯 Which CSS selector matches this element?
   <span class="note" id="top">Hello</span> (a) .note (b) p (c) #intro (d) #note
8. 8.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="top"> (c) <p class="note"> (d) <div class="note">
9. 9.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) #main (c) span (d) #intro
11. 11.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) #box (b) #end (c) div (d) .logo
12. 12.🎯 Which element does the selector p style? (a) <h1> (b) <p class="big"> (c) <h2 class="big"> (d) <li id="hero">
13. 13.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) .note (b) div (c) .top (d) #note
14. 14.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
15. 15.True or false: #hero is an id selector. (a) False (b) True
16. 16.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <div class="logo"> (c) <span class="box"> (d) <div id="logo">
17. 17.True or false: .big is an element selector. (a) True (b) False
18. 18.True or false: h1 is an id selector. (a) False (b) True
19. 19.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
20. 20.🎯 Which element does the selector #logo style? (a) <h2 class="big"> (b) <h1 id="logo"> (c) <h1 class="logo"> (d) <h1 id="end">
21. 21.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
22. 22.True or false: #end is an id selector. (a) True (b) False
23. 23.True or false: h1 is an element selector. (a) False (b) True
24. 24.True or false: .note is an id selector. (a) False (b) True
25. 25.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #hero (b) .hero (c) h2 (d) .note
27. 27.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) .big (b) span (c) #top (d) div
29. 29.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
30. 30.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li class="box"> (c) <li class="star"> (d) <li id="box">
31. 31.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
32. 32.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <span class="end"> (c) <p class="note"> (d) <span id="end">
33. 33.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="big"> (c) <span id="top"> (d) <h2 class="big">
34. 34.🎯 Can many elements share the same class? (a) No (b) Yes
35. 35.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <h1 id="hero"> (c) <span> (d) <p class="menu">
36. 36.True or false: #top is an element selector. (a) True (b) False
37. 37.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="menu"> (c) <div class="note"> (d) <li class="star">
38. 38.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) .logo (b) #end (c) .red (d) #logo
40. 40.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #menu (b) h1 (c) #hero (d) #top

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