CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 475 · 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) <p> (b) <h1 class="note"> (c) <h2 id="end"> (d) <span class="note">
2. 2.True or false: p is an element selector. (a) True (b) False
3. 3.True or false: .card is a class selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <p class="box" id="top">Hello</p> (a) .box (b) .top (c) .star (d) #box
5. 5.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h1 id="star"> (c) <h1 class="star"> (d) <h2 class="note">
7. 7.True or false: #main is a class selector. (a) True (b) False
8. 8.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
9. 9.🎯 Which CSS selector matches this element?
   <li class="red" id="logo">Hello</li> (a) .red (b) div (c) .logo (d) #red
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) li (b) .menu (c) h2 (d) #star
11. 11.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
12. 12.🎯 Which element does the selector #logo style? (a) <h1 class="big"> (b) <p id="end"> (c) <p id="logo"> (d) <p class="logo">
13. 13.True or false: p is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) #red (b) #intro (c) .top (d) p
15. 15.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <h2 class="note"> (c) <h2 id="note"> (d) <li class="red">
16. 16.True or false: li is an element selector. (a) False (b) True
17. 17.True or false: #main is an id selector. (a) False (b) True
18. 18.True or false: #hero is an id selector. (a) False (b) True
19. 19.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
20. 20.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #note (b) #intro (c) .note (d) div
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) .red (b) #top (c) #intro (d) li
22. 22.🎯 Which element does the selector span style? (a) <h1 class="big"> (b) <h2 id="intro"> (c) <span class="big"> (d) <p>
23. 23.True or false: .note is a class selector. (a) True (b) False
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .note (b) .intro (c) #main (d) #note
25. 25.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
26. 26.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
27. 27.True or false: h1 is a class selector. (a) True (b) False
28. 28.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
29. 29.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .intro (b) #main (c) .big (d) #big
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) h2 (b) .box (c) #intro (d) #red
31. 31.True or false: .big is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) #box (b) .star (c) .box (d) p
33. 33.🎯 Which element does the selector #hero style? (a) <li id="hero"> (b) <li class="hero"> (c) <li id="top"> (d) <div class="red">
34. 34.True or false: .star is a class selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) p (b) #menu (c) span (d) .intro
36. 36.True or false: body is an element selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) #big (b) h1 (c) #top (d) .red
38. 38.🎯 Which element does the selector #main style? (a) <p id="main"> (b) <p id="logo"> (c) <h1 class="big"> (d) <p class="main">
39. 39.🎯 Which element does the selector #end style? (a) <h1 id="end"> (b) <h1 class="end"> (c) <h1 id="hero"> (d) <h2 class="menu">
40. 40.🎯 Can many elements share the same class? (a) Yes (b) No

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