CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 941 · 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.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <span class="red" id="main">Hello</span> (a) .box (b) #logo (c) .main (d) span
3. 3.🎯 Which CSS selector matches this element?
   <li class="big" id="top">Hello</li> (a) #intro (b) .red (c) .top (d) .big
4. 4.True or false: .note is a class selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <p class="box" id="end">Hello</p> (a) .end (b) .star (c) #box (d) .box
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="red" id="main">Hello</h1> (a) h1 (b) #red (c) .main (d) .box
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="big" id="hero">Hello</h1> (a) h2 (b) #big (c) .hero (d) #hero
8. 8.True or false: #hero is an element selector. (a) False (b) True
9. 9.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
11. 11.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
12. 12.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) #end (b) .star (c) #box (d) #logo
13. 13.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
14. 14.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="main"> (c) <div class="big"> (d) <h2 class="big">
15. 15.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span class="star"> (c) <span class="box"> (d) <span id="box">
16. 16.🎯 Can many elements share the same class? (a) No (b) Yes
17. 17.🎯 Which element does the selector #end style? (a) <h2 id="end"> (b) <li class="big"> (c) <h2 id="hero"> (d) <h2 class="end">
18. 18.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) .star (b) .logo (c) span (d) #box
19. 19.🎯 Which element does the selector .menu style? (a) <p class="menu"> (b) <p id="menu"> (c) <h1 class="big"> (d) <p class="note">
20. 20.🎯 Which CSS selector matches this element?
    <div class="star" id="logo">Hello</div> (a) .menu (b) div (c) span (d) #star
21. 21.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
22. 22.True or false: .star is an id selector. (a) False (b) True
23. 23.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <h1 class="menu"> (c) <p id="logo"> (d) <p class="logo">
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) div (b) .hero (c) .red (d) span
25. 25.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
26. 26.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p class="note"> (c) <h1 class="red"> (d) <p id="note">
27. 27.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) .intro (c) .red (d) .box
28. 28.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #main (b) .intro (c) #big (d) li
29. 29.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
30. 30.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <p id="end"> (c) <div> (d) <li class="menu">
31. 31.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="box"> (c) <h2 class="star"> (d) <h2 id="box">
33. 33.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) li (b) .end (c) #big (d) #hero
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) #end (b) .menu (c) #menu (d) li
36. 36.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) #red (b) #top (c) span (d) .top
37. 37.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) #star (b) h1 (c) p (d) #main
38. 38.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #star (b) .main (c) #main (d) #logo
39. 39.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) .hero (b) h1 (c) .red (d) .box
40. 40.True or false: img is a class selector. (a) False (b) True

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