CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 309 · 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?
   <li class="note" id="main">Hello</li> (a) .main (b) #main (c) div (d) #logo
2. 2.🎯 Which element does the selector div style? (a) <p class="note"> (b) <div class="note"> (c) <h1 id="logo"> (d) <span>
3. 3.True or false: .note is an id selector. (a) False (b) True
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
6. 6.True or false: #top is an id selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <li class="box" id="top">Hello</li> (a) #box (b) li (c) #intro (d) div
8. 8.🎯 Which CSS selector matches this element?
   <div class="star" id="hero">Hello</div> (a) #hero (b) span (c) .menu (d) #top
9. 9.True or false: #main is an id selector. (a) False (b) True
10. 10.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="intro"> (c) <div class="star"> (d) <li id="main">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h1 (b) #logo (c) h2 (d) .main
12. 12.🎯 Which element does the selector .red style? (a) <h1 id="red"> (b) <h1 class="box"> (c) <h2 class="star"> (d) <h1 class="red">
13. 13.🎯 Which element does the selector span style? (a) <span class="menu"> (b) <h1 class="menu"> (c) <p> (d) <h2 id="logo">
14. 14.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
16. 16.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
17. 17.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) .box (b) span (c) .main (d) #box
18. 18.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="star"> (c) <li> (d) <h2 class="star">
19. 19.🎯 Which element does the selector .note style? (a) <span class="red"> (b) <div id="note"> (c) <div class="note"> (d) <div class="big">
20. 20.True or false: li is an id selector. (a) True (b) False
21. 21.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
22. 22.True or false: .star is an id selector. (a) False (b) True
23. 23.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <li id="end"> (c) <li class="end"> (d) <div class="box">
24. 24.True or false: body is an element selector. (a) True (b) False
25. 25.True or false: .menu is an id 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 CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) #big (b) .hero (c) #top (d) #hero
28. 28.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
29. 29.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <span> (c) <div class="red"> (d) <p class="red">
30. 30.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
31. 31.True or false: h1 is an element selector. (a) True (b) False
32. 32.True or false: img is a class selector. (a) True (b) False
33. 33.🎯 Which element does the selector p style? (a) <p class="box"> (b) <h1> (c) <h2 class="box"> (d) <li id="main">
34. 34.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) h2 (b) .red (c) #big (d) .end
36. 36.True or false: .star is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) .logo (b) #red (c) .red (d) div
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) #hero (b) h2 (c) #end (d) .end
39. 39.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) .big (b) .note (c) .intro (d) #note
40. 40.True or false: #end is an element selector. (a) True (b) False

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