CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 971 · 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?
   <p class="big" id="top">Hello</p> (a) #big (b) .red (c) p (d) .top
2. 2.True or false: #main is an id selector. (a) True (b) False
3. 3.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
4. 4.🎯 Which CSS selector matches this element?
   <p class="box" id="end">Hello</p> (a) .end (b) h1 (c) p (d) #hero
5. 5.True or false: .menu is an element selector. (a) False (b) True
6. 6.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
9. 9.True or false: #logo is an element selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) #top (b) h1 (c) #big (d) .hero
11. 11.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .big (b) p (c) .red (d) #hero
12. 12.True or false: h1 is an element selector. (a) True (b) False
13. 13.🎯 Which element does the selector #end style? (a) <div class="big"> (b) <li class="end"> (c) <li id="hero"> (d) <li id="end">
14. 14.True or false: p is an element selector. (a) False (b) True
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) li (b) #main (c) #logo (d) .note
16. 16.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
17. 17.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h2 class="big"> (c) <h1 class="note"> (d) <h1 class="menu">
18. 18.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) #box (b) .star (c) #hero (d) #end
19. 19.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) .intro (b) #main (c) .box (d) li
20. 20.True or false: #end is an element selector. (a) True (b) False
21. 21.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h2 class="note"> (c) <h1 class="menu"> (d) <h1 class="star">
22. 22.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) .logo (b) #box (c) .box (d) h1
23. 23.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <h1> (c) <li id="logo"> (d) <p class="red">
24. 24.🎯 Which element does the selector .box style? (a) <h2 id="box"> (b) <h2 class="star"> (c) <h2 class="box"> (d) <li class="menu">
25. 25.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
26. 26.🎯 Which element does the selector #hero style? (a) <h1 class="star"> (b) <p class="hero"> (c) <p id="hero"> (d) <p id="top">
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .logo (b) li (c) #menu (d) h2
28. 28.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .note (b) h1 (c) #note (d) #intro
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .top (b) h2 (c) #note (d) #intro
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) #big (b) .end (c) #hero (d) h2
31. 31.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) #menu (b) span (c) .note (d) .menu
32. 32.🎯 Can many elements share the same class? (a) Yes (b) No
33. 33.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #end (b) p (c) #box (d) .logo
35. 35.🎯 Which element does the selector li style? (a) <div> (b) <p id="hero"> (c) <span class="red"> (d) <li class="red">
36. 36.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .intro (b) span (c) .red (d) #main
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) .end (b) .menu (c) .star (d) #hero
38. 38.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) .intro (b) #main (c) div (d) #menu
39. 39.True or false: li is an id selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #hero (b) #red (c) .box (d) .hero

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