CSS Worksheet: Selectors Class and Id

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

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