CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 957 · 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 span style? (a) <h1 class="red"> (b) <p> (c) <h2 id="hero"> (d) <span class="red">
2. 2.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="star" id="intro">Hello</h1> (a) .menu (b) .star (c) #star (d) #main
4. 4.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
5. 5.True or false: #hero is an id selector. (a) True (b) False
6. 6.True or false: li is a class selector. (a) False (b) True
7. 7.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
8. 8.🎯 Which CSS selector matches this element?
   <p class="box" id="top">Hello</p> (a) h1 (b) #intro (c) .star (d) #top
9. 9.🎯 Which element does the selector li style? (a) <span class="big"> (b) <li class="big"> (c) <p id="logo"> (d) <div>
10. 10.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) span (b) #top (c) .hero (d) div
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) #star (b) #hero (c) #end (d) .end
13. 13.True or false: #main is an id selector. (a) False (b) True
14. 14.🎯 Can many elements share the same class? (a) Yes (b) No
15. 15.True or false: .menu is an id selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #top (b) h1 (c) .top (d) #note
17. 17.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
18. 18.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) #end (b) h1 (c) .end (d) #hero
19. 19.True or false: h1 is an id selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) span (b) #intro (c) #box (d) #top
21. 21.True or false: #hero is an element selector. (a) False (b) True
22. 22.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <p class="red"> (c) <span class="big"> (d) <span class="note">
23. 23.🎯 Which element does the selector .box style? (a) <li class="box"> (b) <li class="star"> (c) <div class="menu"> (d) <li id="box">
24. 24.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="box"> (c) <div id="hero"> (d) <h1 class="box">
25. 25.🎯 Which element does the selector #top style? (a) <h1 id="top"> (b) <h1 class="top"> (c) <h2 class="star"> (d) <h1 id="intro">
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) .main (b) h2 (c) #logo (d) .star
27. 27.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span class="intro"> (c) <p class="note"> (d) <span id="intro">
28. 28.True or false: li is an id selector. (a) True (b) False
29. 29.True or false: .note is a class selector. (a) False (b) True
30. 30.True or false: .star is an id selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) #big (b) h1 (c) .big (d) .red
32. 32.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
33. 33.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
35. 35.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #end (b) #note (c) li (d) .big
37. 37.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) .box (b) #top (c) #red (d) li
39. 39.🎯 Which element does the selector h2 style? (a) <div class="box"> (b) <span id="logo"> (c) <h2 class="box"> (d) <li>
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) #star (b) #logo (c) .star (d) li

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