CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 644 · 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: body is an element selector. (a) False (b) True
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="star" id="main">Hello</h1> (a) .star (b) h2 (c) .menu (d) #logo
3. 3.🎯 Which CSS selector matches this element?
   <p class="red" id="intro">Hello</p> (a) .red (b) #red (c) .box (d) .intro
4. 4.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <li id="intro"> (c) <p class="box"> (d) <h1>
5. 5.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 Which CSS selector matches this element?
   <p class="note" id="end">Hello</p> (a) #note (b) #hero (c) .note (d) .big
8. 8.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <h2 id="intro"> (c) <h2 id="top"> (d) <li class="big">
9. 9.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="box"> (c) <div id="top"> (d) <li class="box">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) .note (b) #menu (c) #hero (d) .menu
12. 12.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) .star (b) #box (c) span (d) #main
13. 13.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
14. 14.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .intro (b) p (c) #note (d) h1
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
16. 16.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h2 class="note"> (c) <h1 class="menu"> (d) <h1 id="star">
17. 17.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
18. 18.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) .logo (b) #note (c) span (d) #logo
20. 20.True or false: p is an element selector. (a) True (b) False
21. 21.True or false: .note is an element selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) #star (b) span (c) .menu (d) #intro
23. 23.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p id="note"> (c) <h1 class="red"> (d) <p class="note">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) h2 (b) #logo (c) #big (d) h1
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) .end (b) #hero (c) #menu (d) h2
26. 26.True or false: #logo is an element selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #note (b) #top (c) .hero (d) span
28. 28.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="big"> (c) <span class="big"> (d) <h2 id="main">
29. 29.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) #logo (b) h1 (c) .red (d) #end
30. 30.True or false: .card is an id selector. (a) False (b) True
31. 31.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) .intro (b) #intro (c) div (d) #red
33. 33.True or false: .card is a class selector. (a) False (b) True
34. 34.True or false: .big is an id selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) .red (c) #main (d) span
36. 36.🎯 Which element does the selector #main style? (a) <h2 id="logo"> (b) <h2 class="main"> (c) <li class="big"> (d) <h2 id="main">
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #big (b) .red (c) .main (d) .big
38. 38.True or false: .menu is an element selector. (a) True (b) False
39. 39.True or false: li is an id selector. (a) True (b) False
40. 40.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <div class="menu"> (c) <li id="logo"> (d) <li id="end">

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