CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 431 · 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?
   <span class="red" id="main">Hello</span> (a) #red (b) #logo (c) .red (d) .main
2. 2.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) 2 (d) any number
4. 4.True or false: p is an element selector. (a) True (b) False
5. 5.🎯 Which element does the selector div style? (a) <div class="star"> (b) <h1 id="logo"> (c) <p class="star"> (d) <span>
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 Which element does the selector .menu style? (a) <div class="menu"> (b) <span class="big"> (c) <div class="note"> (d) <div id="menu">
9. 9.True or false: p is an id selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .end (b) div (c) li (d) #note
11. 11.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) #hero (b) .hero (c) .menu (d) #top
12. 12.True or false: #main is an id selector. (a) True (b) False
13. 13.True or false: li is an element selector. (a) False (b) True
14. 14.True or false: #hero is an id selector. (a) False (b) True
15. 15.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) #top (b) .big (c) .hero (d) .red
17. 17.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
18. 18.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) .box (b) #hero (c) div (d) li
19. 19.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
20. 20.True or false: .big is an id selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) h2 (b) li (c) .big (d) #note
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) .big (b) h1 (c) .logo (d) h2
23. 23.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) .hero (b) #big (c) div (d) #hero
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) h2 (b) .red (c) h1 (d) #big
25. 25.True or false: #hero is a class selector. (a) False (b) True
26. 26.True or false: li is a class selector. (a) False (b) True
27. 27.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
28. 28.True or false: #end is a class selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) p (b) #star (c) span (d) .top
30. 30.True or false: h1 is an element selector. (a) False (b) True
31. 31.🎯 Which element does the selector #top style? (a) <h1 id="top"> (b) <h1 class="top"> (c) <h1 id="intro"> (d) <h2 class="big">
32. 32.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
33. 33.True or false: #logo is a class selector. (a) True (b) False
34. 34.🎯 Which element does the selector #main style? (a) <span id="logo"> (b) <p class="big"> (c) <span class="main"> (d) <span id="main">
35. 35.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) div (b) .intro (c) span (d) #note
36. 36.True or false: h1 is an id selector. (a) True (b) False
37. 37.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <p id="top"> (c) <div> (d) <li class="menu">
38. 38.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) div (b) .star (c) li (d) .logo
39. 39.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h1> (c) <p class="big"> (d) <h2 class="big">
40. 40.🎯 Which element does the selector .menu style? (a) <p class="menu"> (b) <p id="menu"> (c) <h1 class="big"> (d) <p class="note">

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