CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 239 · 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?
   <h1 class="big" id="intro">Hello</h1> (a) #big (b) h1 (c) h2 (d) #main
2. 2.True or false: #top is an id selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <li class="star" id="end">Hello</li> (a) #hero (b) .star (c) .end (d) #star
4. 4.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
6. 6.True or false: li is a class selector. (a) False (b) True
7. 7.🎯 Which CSS selector matches this element?
   <div class="star" id="main">Hello</div> (a) #star (b) #logo (c) .menu (d) div
8. 8.🎯 Which element does the selector #end style? (a) <li id="end"> (b) <li class="end"> (c) <li id="hero"> (d) <div class="menu">
9. 9.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <li> (c) <div class="star"> (d) <span id="end">
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .red (b) .big (c) #big (d) .hero
11. 11.True or false: #logo is an id selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) #end (b) .logo (c) span (d) .big
13. 13.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .end (b) #big (c) h1 (d) .big
14. 14.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) h2 (b) .star (c) .top (d) #star
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
16. 16.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h2 class="box"> (c) <h1 id="main"> (d) <h1 id="logo">
18. 18.🎯 Which element does the selector #end style? (a) <span id="end"> (b) <span class="end"> (c) <p class="star"> (d) <span id="hero">
19. 19.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
21. 21.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #main (b) .note (c) .intro (d) h1
22. 22.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
23. 23.True or false: #top is an element selector. (a) True (b) False
24. 24.True or false: p is a class selector. (a) False (b) True
25. 25.🎯 Can many elements share the same class? (a) Yes (b) No
26. 26.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="top"> (c) <h1 class="red"> (d) <span class="red">
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) .star (b) #hero (c) #end (d) .end
28. 28.True or false: #top is a class selector. (a) True (b) False
29. 29.True or false: img is a class selector. (a) False (b) True
30. 30.🎯 Which element does the selector h2 style? (a) <div class="box"> (b) <h2 class="box"> (c) <li> (d) <span id="top">
31. 31.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
32. 32.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .end (b) .red (c) #big (d) span
33. 33.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="top"> (c) <h1 class="big"> (d) <span class="big">
34. 34.True or false: li is an id selector. (a) True (b) False
35. 35.True or false: #hero is an element selector. (a) True (b) False
36. 36.True or false: .star is a class selector. (a) True (b) False
37. 37.🎯 Which element does the selector #end style? (a) <h1 class="red"> (b) <p class="end"> (c) <p id="end"> (d) <p id="hero">
38. 38.True or false: .card is an element selector. (a) False (b) True
39. 39.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
40. 40.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) #top (b) #red (c) .top (d) #intro

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