CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 638 · 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.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <p id="main"> (c) <p id="intro"> (d) <h1 class="note">
3. 3.🎯 Which element does the selector li style? (a) <li class="menu"> (b) <span class="menu"> (c) <p id="logo"> (d) <div>
4. 4.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
5. 5.True or false: .card is an element selector. (a) True (b) False
6. 6.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h1 id="main"> (c) <h2 class="box"> (d) <h1 id="intro">
7. 7.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
10. 10.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <span class="big"> (c) <p class="box"> (d) <span id="big">
11. 11.🎯 Can many elements share the same class? (a) Yes (b) No
12. 12.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) .hero (b) #box (c) .box (d) p
13. 13.True or false: #end is a class selector. (a) True (b) False
14. 14.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span class="top"> (c) <p class="star"> (d) <span id="intro">
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) .menu (b) #hero (c) .end (d) li
17. 17.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) #star (b) .star (c) p (d) #logo
18. 18.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="end"> (c) <span class="big"> (d) <h1 class="big">
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .note (b) #intro (c) h1 (d) h2
20. 20.🎯 Which element does the selector .menu style? (a) <p class="big"> (b) <span id="menu"> (c) <span class="menu"> (d) <span class="note">
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #end (b) h1 (c) .logo (d) h2
22. 22.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) #box (b) #intro (c) .box (d) .top
23. 23.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #end (b) #box (c) h1 (d) .box
24. 24.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
25. 25.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
26. 26.True or false: body is an id selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) span (b) #star (c) .menu (d) div
28. 28.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) span (b) p (c) .logo (d) #star
29. 29.True or false: .star is an id selector. (a) False (b) True
30. 30.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="box"> (c) <p class="star"> (d) <span class="red">
31. 31.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #top (b) .top (c) #star (d) #intro
32. 32.True or false: #top is an element selector. (a) False (b) True
33. 33.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) #end (b) #logo (c) .logo (d) .box
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .red (b) h2 (c) h1 (d) #top
36. 36.True or false: .star is a class selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) #hero (b) .hero (c) #star (d) #top
38. 38.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="note"> (c) <p class="big"> (d) <p id="note">
39. 39.True or false: h1 is an element selector. (a) False (b) True
40. 40.True or false: #logo is an element selector. (a) True (b) False

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