CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 554 · 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.🎯 Which CSS selector matches this element?
   <div class="note" id="logo">Hello</div> (a) #end (b) .big (c) .logo (d) #logo
2. 2.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) span (b) #intro (c) #box (d) #top
3. 3.True or false: #logo is a class selector. (a) True (b) False
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div class="big"> (c) <div id="big"> (d) <div class="red">
6. 6.True or false: #hero is an element selector. (a) False (b) True
7. 7.🎯 Which CSS selector matches this element?
   <li class="star" id="hero">Hello</li> (a) #star (b) li (c) .menu (d) .hero
8. 8.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="note" id="hero">Hello</h2> (a) #note (b) h2 (c) li (d) .hero
10. 10.🎯 Which element does the selector span style? (a) <span class="star"> (b) <h2 id="hero"> (c) <p> (d) <h1 class="star">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) #hero (b) .box (c) h2 (d) h1
12. 12.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
14. 14.True or false: body is a class selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #note (b) .main (c) #logo (d) .note
16. 16.True or false: .big is an element selector. (a) False (b) True
17. 17.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 class="red"> (c) <h1 id="big"> (d) <h1 class="big">
18. 18.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) span (b) div (c) .logo (d) #red
20. 20.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
21. 21.True or false: p is a class selector. (a) False (b) True
22. 22.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
23. 23.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .star (b) p (c) #intro (d) #top
24. 24.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector #logo style? (a) <h2 class="red"> (b) <h1 id="end"> (c) <h1 class="logo"> (d) <h1 id="logo">
26. 26.🎯 Which element does the selector div style? (a) <p class="note"> (b) <div class="note"> (c) <span> (d) <h1 id="intro">
27. 27.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .star (b) #box (c) li (d) #top
29. 29.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) .intro (b) #intro (c) #menu (d) li
31. 31.True or false: #main is a class selector. (a) False (b) True
32. 32.🎯 Which element does the selector li style? (a) <li class="star"> (b) <div> (c) <span class="star"> (d) <p id="end">
33. 33.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) div (b) .menu (c) #menu (d) .intro
34. 34.True or false: .note is an id selector. (a) False (b) True
35. 35.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) #menu (b) #hero (c) h2 (d) .end
37. 37.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <li> (c) <span id="top"> (d) <h2 class="big">
38. 38.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) .end (b) #hero (c) h1 (d) #end
39. 39.🎯 Which element does the selector #main style? (a) <p class="big"> (b) <span id="logo"> (c) <span id="main"> (d) <span class="main">
40. 40.True or false: .menu is an id selector. (a) True (b) False

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