CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 13 · 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.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h2 class="menu"> (c) <p class="menu"> (d) <h1>
4. 4.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
5. 5.True or false: .menu is a class selector. (a) False (b) True
6. 6.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
7. 7.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
8. 8.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) .big (b) .main (c) p (d) #logo
9. 9.🎯 Which CSS selector matches this element?
   <p class="star" id="main">Hello</p> (a) #logo (b) h1 (c) .main (d) .star
10. 10.True or false: #logo is an id selector. (a) False (b) True
11. 11.True or false: li is an element selector. (a) False (b) True
12. 12.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
14. 14.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
16. 16.True or false: .card is a class selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .red (b) .box (c) p (d) #intro
18. 18.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p id="red"> (c) <p class="red"> (d) <h1 class="star">
19. 19.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) #star (b) .end (c) h1 (d) .star
20. 20.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p id="intro"> (c) <p class="intro"> (d) <h1 class="menu">
21. 21.True or false: .note is a class selector. (a) False (b) True
22. 22.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <span class="box"> (c) <p> (d) <h2 id="intro">
23. 23.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) li (b) .intro (c) #star (d) .menu
24. 24.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) #logo (b) li (c) .star (d) .main
25. 25.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="menu"> (c) <p class="star"> (d) <h1 class="note">
26. 26.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) div (b) .box (c) #red (d) #logo
27. 27.True or false: .big is a class selector. (a) False (b) True
28. 28.True or false: .star is a class selector. (a) False (b) True
29. 29.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) .big (b) #note (c) li (d) h2
31. 31.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) #main (b) .menu (c) #star (d) .main
33. 33.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) .top (b) span (c) p (d) #big
34. 34.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .big (b) #intro (c) h1 (d) .top
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) #menu (b) .note (c) h2 (d) #end
36. 36.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 class="logo"> (c) <h1 id="end"> (d) <h2 class="star">
37. 37.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
38. 38.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) .big (b) div (c) #end (d) span
39. 39.🎯 Which element does the selector .big style? (a) <p class="red"> (b) <p id="big"> (c) <h1 class="box"> (d) <p class="big">
40. 40.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) .red (b) #red (c) #top (d) .box

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