CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 156 · 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?
   <div class="star" id="hero">Hello</div> (a) .menu (b) .star (c) .hero (d) #top
3. 3.🎯 Which sign starts an id selector? (a) # (b) & (c) . (d) @
4. 4.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="menu"> (c) <div id="main"> (d) <h1 class="menu">
7. 7.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
9. 9.🎯 Which element does the selector li style? (a) <span class="red"> (b) <p id="intro"> (c) <div> (d) <li class="red">
10. 10.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .box (b) #red (c) #intro (d) p
11. 11.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <div class="logo"> (c) <div id="logo"> (d) <span class="box">
12. 12.🎯 Which element does the selector #hero style? (a) <li class="red"> (b) <h2 id="top"> (c) <h2 class="hero"> (d) <h2 id="hero">
13. 13.True or false: #main is an id selector. (a) False (b) True
14. 14.True or false: h1 is an element selector. (a) False (b) True
15. 15.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <h1 class="red"> (c) <p class="top"> (d) <p id="top">
16. 16.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) span (b) .big (c) .end (d) #end
17. 17.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .big (b) .main (c) #main (d) #note
18. 18.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
19. 19.True or false: li is a class selector. (a) True (b) False
20. 20.True or false: p is an element selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .main (b) li (c) #star (d) div
22. 22.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) p (b) #main (c) #red (d) .intro
24. 24.🎯 Which element does the selector div style? (a) <div class="big"> (b) <h1 id="main"> (c) <span> (d) <p class="big">
25. 25.🎯 Which element does the selector #hero style? (a) <p id="hero"> (b) <h1 class="menu"> (c) <p class="hero"> (d) <p id="top">
26. 26.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
27. 27.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) div (b) #box (c) .star (d) .intro
28. 28.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
29. 29.True or false: #main is an element selector. (a) True (b) False
30. 30.True or false: body is a class selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) #hero (b) .end (c) #end (d) #red
32. 32.🎯 Which element does the selector .box style? (a) <div class="box"> (b) <span class="menu"> (c) <div id="box"> (d) <div class="star">
33. 33.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h1 class="intro"> (c) <h1 id="intro"> (d) <h2 class="big">
34. 34.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 Which element does the selector p style? (a) <h1> (b) <p class="red"> (c) <li id="logo"> (d) <h2 class="red">
36. 36.True or false: body is an id selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #star (b) span (c) #top (d) div
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #top (b) #big (c) .red (d) .top
39. 39.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <p> (d) <h2 id="hero">
40. 40.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) div (b) .big (c) #big (d) .logo

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