CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 498 · 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.🎯 Can many elements share the same class? (a) No (b) Yes
2. 2.🎯 Which CSS selector matches this element?
   <span class="note" id="end">Hello</span> (a) #hero (b) #end (c) #note (d) .big
3. 3.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <h1> (c) <li id="intro"> (d) <p class="menu">
6. 6.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
8. 8.True or false: .big is an element selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="big" id="main">Hello</h1> (a) .red (b) .main (c) #big (d) h1
10. 10.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
11. 11.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
12. 12.True or false: .card is an id selector. (a) True (b) False
13. 13.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) .red (b) #red (c) .box (d) .intro
14. 14.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
15. 15.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) #big (b) p (c) #intro (d) .top
16. 16.True or false: #end is a class selector. (a) False (b) True
17. 17.True or false: #hero is a class selector. (a) True (b) False
18. 18.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .box (b) .star (c) #box (d) #main
19. 19.True or false: .menu is an element selector. (a) False (b) True
20. 20.True or false: h1 is an element selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) .top (b) .red (c) .big (d) span
22. 22.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
25. 25.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <li class="box"> (c) <h2 id="top"> (d) <h2 id="hero">
26. 26.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) #main (b) .intro (c) p (d) span
27. 27.🎯 Which element does the selector #end style? (a) <div class="star"> (b) <li id="end"> (c) <li class="end"> (d) <li id="hero">
28. 28.🎯 Which element does the selector span style? (a) <h1 class="star"> (b) <p> (c) <span class="star"> (d) <h2 id="logo">
29. 29.True or false: img is a class selector. (a) True (b) False
30. 30.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
31. 31.True or false: li is an id selector. (a) True (b) False
32. 32.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
33. 33.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) .intro (b) #main (c) p (d) #intro
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) #star (b) .top (c) h2 (d) #intro
35. 35.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) h1 (b) p (c) #end (d) .logo
36. 36.🎯 Which element does the selector span style? (a) <span class="big"> (b) <h2 id="end"> (c) <p> (d) <h1 class="big">
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .top (b) #big (c) #intro (d) #top
38. 38.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) h1 (b) .red (c) #main (d) #intro
39. 39.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <div class="red"> (c) <span> (d) <p class="red">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) #logo (b) .main (c) #main (d) .star

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