CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 567 · 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.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
2. 2.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="intro"> (c) <div class="big"> (d) <p class="big">
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="note" id="logo">Hello</h1> (a) h2 (b) h1 (c) #note (d) .logo
4. 4.True or false: #hero is a class selector. (a) True (b) False
5. 5.🎯 Which element does the selector span style? (a) <h1 class="red"> (b) <p> (c) <span class="red"> (d) <h2 id="main">
6. 6.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h2 class="star"> (c) <h1 class="main"> (d) <h1 id="logo">
7. 7.🎯 Which element does the selector span style? (a) <p> (b) <span class="big"> (c) <h1 class="big"> (d) <h2 id="hero">
8. 8.True or false: h1 is an element selector. (a) False (b) True
9. 9.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <p id="logo"> (c) <h1 class="box"> (d) <p id="main">
11. 11.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li class="box"> (c) <li id="box"> (d) <li class="star">
12. 12.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <li class="note"> (c) <h1 class="note"> (d) <h2>
13. 13.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
14. 14.True or false: #logo is an id selector. (a) False (b) True
15. 15.🎯 Which element does the selector #hero style? (a) <span id="top"> (b) <span class="hero"> (c) <p class="menu"> (d) <span id="hero">
16. 16.🎯 Can many elements share the same class? (a) Yes (b) No
17. 17.True or false: .big is an id selector. (a) True (b) False
18. 18.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
19. 19.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) div (b) li (c) #star (d) #end
21. 21.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <h1> (c) <p class="note"> (d) <h2 class="note">
22. 22.True or false: #top is an element selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) #big (b) li (c) .end (d) div
24. 24.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
25. 25.True or false: .star is a class selector. (a) True (b) False
26. 26.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) #main (b) .intro (c) .note (d) #intro
27. 27.True or false: #main is an id selector. (a) True (b) False
28. 28.🎯 Which element does the selector li style? (a) <div> (b) <li class="note"> (c) <p id="top"> (d) <span class="note">
29. 29.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) .star (b) div (c) #star (d) .top
30. 30.True or false: body is an element selector. (a) False (b) True
31. 31.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <span class="box"> (c) <div id="big"> (d) <div class="big">
32. 32.True or false: .big is a class selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) h1 (b) h2 (c) .logo (d) #end
34. 34.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <span class="box"> (c) <div id="intro"> (d) <div id="main">
35. 35.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) .logo (b) .star (c) span (d) div
36. 36.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) #hero (b) #menu (c) #end (d) .note
37. 37.True or false: .note is an id selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) .big (b) #big (c) .red (d) div
39. 39.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
40. 40.True or false: #logo is an element selector. (a) False (b) True

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