CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 327 · 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="intro">Hello</span> (a) .red (b) #red (c) .box (d) #main
2. 2.🎯 Which CSS selector matches this element?
   <span class="box" id="hero">Hello</span> (a) .hero (b) p (c) .star (d) .box
3. 3.True or false: h1 is an id selector. (a) False (b) True
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
5. 5.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <p class="big"> (c) <h1> (d) <li id="intro">
6. 6.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
7. 7.🎯 Which CSS selector matches this element?
   <span class="box" id="logo">Hello</span> (a) .logo (b) #logo (c) #box (d) #end
8. 8.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <div class="note"> (c) <li id="hero"> (d) <li id="end">
9. 9.True or false: body is an id selector. (a) False (b) True
10. 10.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
11. 11.True or false: #logo is an element selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) .star (b) #box (c) span (d) div
13. 13.True or false: #logo is an id selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) p (b) .logo (c) #logo (d) #end
15. 15.🎯 Which element does the selector #top style? (a) <li class="star"> (b) <h2 id="intro"> (c) <h2 class="top"> (d) <h2 id="top">
16. 16.🎯 Which element does the selector .menu style? (a) <div class="note"> (b) <span class="big"> (c) <div class="menu"> (d) <div id="menu">
17. 17.🎯 Which element does the selector div style? (a) <span> (b) <p class="big"> (c) <div class="big"> (d) <h1 id="top">
18. 18.True or false: img is a class selector. (a) True (b) False
19. 19.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <div class="red"> (c) <p class="red"> (d) <span>
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) .red (b) h2 (c) h1 (d) #hero
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) #red (b) .red (c) .box (d) li
22. 22.True or false: .card is an element selector. (a) False (b) True
23. 23.True or false: #hero is an id selector. (a) False (b) True
24. 24.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
25. 25.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
26. 26.True or false: .big is a class selector. (a) True (b) False
27. 27.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) .menu (b) .note (c) #menu (d) p
28. 28.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
29. 29.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .note (b) #main (c) #note (d) .intro
31. 31.True or false: .menu is an element selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .red (b) #big (c) p (d) span
33. 33.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <div id="red"> (c) <div class="red"> (d) <span class="star">
34. 34.True or false: .note is an id selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) #star (b) #logo (c) .star (d) h2
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) #menu (b) .note (c) #hero (d) h1
37. 37.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <div id="intro"> (c) <h2> (d) <h1 class="star">
38. 38.True or false: img is an element selector. (a) True (b) False
39. 39.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
40. 40.🎯 Which element does the selector li style? (a) <span class="note"> (b) <p id="intro"> (c) <li class="note"> (d) <div>

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