CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 495 · 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.🎯 Can many elements share the same class? (a) No (b) Yes
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="star" id="main">Hello</h2> (a) #star (b) .menu (c) #main (d) #logo
3. 3.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
4. 4.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
6. 6.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
7. 7.🎯 Which element does the selector #hero style? (a) <h2 class="box"> (b) <h1 id="top"> (c) <h1 id="hero"> (d) <h1 class="hero">
8. 8.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
9. 9.True or false: li is a class selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) .end (b) h2 (c) .menu (d) h1
11. 11.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) .hero (b) li (c) .note (d) #menu
12. 12.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="hero"> (c) <div class="note"> (d) <p class="note">
13. 13.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
14. 14.🎯 Which element does the selector #logo style? (a) <h1 class="red"> (b) <p id="end"> (c) <p id="logo"> (d) <p class="logo">
15. 15.True or false: .menu is an element selector. (a) True (b) False
16. 16.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
17. 17.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
18. 18.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) .top (b) #red (c) #intro (d) div
19. 19.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
21. 21.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
22. 22.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <p class="menu"> (c) <h1> (d) <li id="hero">
23. 23.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="end"> (c) <p class="big"> (d) <div class="big">
24. 24.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) #end (b) span (c) .red (d) .logo
25. 25.True or false: p is an id selector. (a) False (b) True
26. 26.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="red"> (c) <p class="big"> (d) <p id="big">
27. 27.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) div (b) .top (c) .note (d) .big
28. 28.True or false: .menu is a class selector. (a) True (b) False
29. 29.True or false: #end is a class selector. (a) True (b) False
30. 30.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which element does the selector #top style? (a) <h2 class="menu"> (b) <h1 id="intro"> (c) <h1 id="top"> (d) <h1 class="top">
33. 33.🎯 Which element does the selector #logo style? (a) <div class="big"> (b) <li class="logo"> (c) <li id="logo"> (d) <li id="end">
34. 34.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <span class="big"> (c) <p class="box"> (d) <span id="big">
35. 35.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <h2 class="star"> (c) <li class="note"> (d) <h2 class="menu">
36. 36.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) .end (b) p (c) #menu (d) .menu
37. 37.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="box"> (c) <div class="box"> (d) <span id="top">
38. 38.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) .menu (b) #intro (c) .intro (d) p
39. 39.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="big"> (c) <h2 id="note"> (d) <h2 class="note">
40. 40.True or false: .note is an element selector. (a) True (b) False

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