CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 471 · 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?
   <p class="big" id="intro">Hello</p> (a) .red (b) .intro (c) #intro (d) #big
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
4. 4.True or false: .big is an element selector. (a) True (b) False
5. 5.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
6. 6.🎯 Which CSS selector matches this element?
   <div class="box" id="intro">Hello</div> (a) div (b) .intro (c) #main (d) .star
7. 7.True or false: #top is an id selector. (a) False (b) True
8. 8.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 Which element does the selector #main style? (a) <h1 class="note"> (b) <p class="main"> (c) <p id="logo"> (d) <p id="main">
10. 10.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) #menu (b) #intro (c) span (d) #main
11. 11.True or false: #top is a class selector. (a) True (b) False
12. 12.🎯 Which sign starts an id selector? (a) & (b) # (c) @ (d) .
13. 13.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
14. 14.True or false: img is a class selector. (a) True (b) False
15. 15.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <p class="box"> (c) <span id="big"> (d) <span class="big">
16. 16.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
17. 17.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
18. 18.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <h2 id="logo"> (d) <li class="box">
19. 19.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <h1> (c) <p class="menu"> (d) <li id="top">
20. 20.True or false: .star is a class selector. (a) True (b) False
21. 21.True or false: h1 is an element selector. (a) True (b) False
22. 22.🎯 Which element does the selector span style? (a) <h2 id="end"> (b) <span class="red"> (c) <h1 class="red"> (d) <p>
23. 23.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) .main (b) .star (c) #main (d) #box
24. 24.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) #hero (b) .red (c) div (d) #red
25. 25.True or false: .note is an id selector. (a) True (b) False
26. 26.True or false: #hero is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="top"> (c) <li class="box"> (d) <h1 class="box">
28. 28.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
29. 29.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <h1 class="menu"> (c) <p class="box"> (d) <p id="box">
30. 30.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
31. 31.True or false: .big is a class selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) h1 (b) p (c) #end (d) .logo
33. 33.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span class="top"> (c) <p class="menu"> (d) <span id="intro">
34. 34.True or false: li is an id selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) #big (b) .red (c) span (d) #hero
36. 36.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
37. 37.True or false: img is an element selector. (a) True (b) False
38. 38.🎯 Which element does the selector li style? (a) <div> (b) <li class="note"> (c) <span class="note"> (d) <p id="intro">
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #big (b) .intro (c) .red (d) .big
40. 40.🎯 Which element does the selector #top style? (a) <li class="big"> (b) <h2 id="intro"> (c) <h2 id="top"> (d) <h2 class="top">

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