CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 652 · 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: .card is an id selector. (a) False (b) True
2. 2.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
3. 3.True or false: #main is a class selector. (a) True (b) False
4. 4.🎯 Which CSS selector matches this element?
   <span class="note" id="top">Hello</span> (a) .big (b) #note (c) .top (d) .note
5. 5.🎯 Which element does the selector .star style? (a) <h2 class="star"> (b) <li class="note"> (c) <h2 id="star"> (d) <h2 class="menu">
6. 6.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
7. 7.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h1 id="end"> (c) <h1 id="logo"> (d) <h2 class="big">
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="big" id="top">Hello</h1> (a) h2 (b) .red (c) #top (d) #intro
9. 9.🎯 Which CSS selector matches this element?
   <div class="note" id="main">Hello</div> (a) #logo (b) div (c) span (d) .main
10. 10.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
11. 11.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) .box (b) .main (c) span (d) #logo
13. 13.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) .note (b) h1 (c) p (d) #top
14. 14.True or false: h1 is a class selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) p (b) #top (c) .hero (d) span
16. 16.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <span> (c) <div class="note"> (d) <p class="note">
17. 17.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Which element does the selector h1 style? (a) <h1 class="menu"> (b) <h2> (c) <li class="menu"> (d) <div id="main">
19. 19.True or false: body is an element selector. (a) False (b) True
20. 20.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
21. 21.True or false: p is an element selector. (a) True (b) False
22. 22.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li class="box"> (c) <li class="star"> (d) <li id="box">
23. 23.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) span (b) .big (c) #intro (d) div
24. 24.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) #big (b) .hero (c) #top (d) #hero
25. 25.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <h2> (c) <div id="intro"> (d) <h1 class="star">
26. 26.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) .top (b) .red (c) #red (d) .box
27. 27.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
28. 28.True or false: .note is an element selector. (a) True (b) False
29. 29.🎯 Which element does the selector div style? (a) <h1 id="intro"> (b) <span> (c) <div class="red"> (d) <p class="red">
30. 30.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h2 class="red"> (c) <h1 class="big"> (d) <h1 class="note">
31. 31.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
32. 32.True or false: #top is an id selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <span class="note" id="top">Hello</span> (a) p (b) #note (c) #top (d) .top
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) .top (b) #intro (c) #big (d) h2
35. 35.🎯 Which element does the selector .box style? (a) <span class="menu"> (b) <div id="box"> (c) <div class="star"> (d) <div class="box">
36. 36.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <li id="star"> (c) <li class="star"> (d) <div class="note">
37. 37.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #menu (b) #top (c) h1 (d) #intro
38. 38.🎯 Which element does the selector #top style? (a) <p class="big"> (b) <span class="top"> (c) <span id="intro"> (d) <span id="top">
39. 39.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) #box (b) .box (c) .star (d) .logo
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) #big (b) li (c) .top (d) #top

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