CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 578 · 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 CSS selector matches this element?
   <h1 class="red" id="hero">Hello</h1> (a) #red (b) h1 (c) .box (d) .hero
2. 2.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="big" id="end">Hello</h1> (a) .red (b) #hero (c) h2 (d) #end
4. 4.🎯 Which element does the selector h2 style? (a) <h2 class="big"> (b) <div class="big"> (c) <li> (d) <span id="main">
5. 5.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="star"> (c) <div id="logo"> (d) <li class="star">
6. 6.🎯 Which CSS selector matches this element?
   <span class="box" id="logo">Hello</span> (a) #end (b) .logo (c) p (d) .box
7. 7.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
8. 8.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
9. 9.🎯 Which CSS selector matches this element?
   <p class="note" id="hero">Hello</p> (a) #top (b) .hero (c) .big (d) p
10. 10.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
11. 11.True or false: body is an element selector. (a) True (b) False
12. 12.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p id="big"> (c) <p class="red"> (d) <p class="big">
13. 13.True or false: li is a class selector. (a) False (b) True
14. 14.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
15. 15.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) div (b) #red (c) li (d) #end
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .big (b) #main (c) .note (d) .intro
17. 17.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) .menu (b) #hero (c) #star (d) div
18. 18.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h2 class="box"> (c) <h1 class="main"> (d) <h1 id="logo">
19. 19.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
20. 20.True or false: #top is a class selector. (a) False (b) True
21. 21.True or false: .big is an element selector. (a) True (b) False
22. 22.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <h1 class="star"> (c) <p class="intro"> (d) <p id="main">
23. 23.True or false: .menu is a class selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .big (b) .red (c) .top (d) #intro
25. 25.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) span (b) p (c) .hero (d) .star
27. 27.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <span id="end"> (c) <span class="end"> (d) <p class="star">
28. 28.🎯 Can many elements share the same class? (a) Yes (b) No
29. 29.🎯 Which element does the selector li style? (a) <span class="box"> (b) <p id="intro"> (c) <li class="box"> (d) <div>
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) h2 (b) #top (c) li (d) .hero
31. 31.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
32. 32.True or false: .big is an id selector. (a) True (b) False
33. 33.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) #menu (b) .top (c) #intro (d) div
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) .intro (b) #intro (c) .star (d) h2
36. 36.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
37. 37.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) div (b) li (c) .main (d) #red
38. 38.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="logo"> (c) <h1 class="red"> (d) <span class="red">
39. 39.True or false: #main is a class selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) .end (b) .box (c) #red (d) #end

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