CSS Worksheet: Selectors Class and Id

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

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