CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 540 · 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 element does the selector h2 style? (a) <span id="intro"> (b) <div class="note"> (c) <li> (d) <h2 class="note">
2. 2.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h2> (c) <h1 class="red"> (d) <div id="intro">
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="big" id="end">Hello</h1> (a) h2 (b) #hero (c) h1 (d) .end
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
5. 5.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
6. 6.🎯 Which element does the selector #hero style? (a) <span id="top"> (b) <span id="hero"> (c) <p class="menu"> (d) <span class="hero">
7. 7.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 class="red"> (c) <h2 class="big"> (d) <h2 id="big">
8. 8.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <span class="star" id="hero">Hello</span> (a) .star (b) p (c) #star (d) #top
10. 10.🎯 Which element does the selector #logo style? (a) <h2 class="note"> (b) <h1 class="logo"> (c) <h1 id="end"> (d) <h1 id="logo">
11. 11.🎯 Can many elements share the same class? (a) No (b) Yes
12. 12.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #menu (b) #main (c) .note (d) h1
14. 14.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
18. 18.True or false: p is a class selector. (a) True (b) False
19. 19.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) h1 (b) .box (c) .logo (d) #logo
21. 21.True or false: #end is an id selector. (a) False (b) True
22. 22.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <div id="main"> (c) <h2> (d) <h1 class="star">
23. 23.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h1 class="menu"> (c) <h2 class="big"> (d) <h1 class="note">
24. 24.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <p class="intro"> (c) <h1 class="note"> (d) <p id="main">
26. 26.True or false: #logo is an id selector. (a) False (b) True
27. 27.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
28. 28.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #logo (b) .star (c) div (d) .logo
29. 29.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
30. 30.True or false: .menu is a class selector. (a) False (b) True
31. 31.True or false: #end is a class selector. (a) True (b) False
32. 32.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) #hero (b) h2 (c) #end (d) #menu
34. 34.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) span (b) #big (c) #hero (d) .hero
35. 35.🎯 Which element does the selector li style? (a) <div> (b) <span class="red"> (c) <li class="red"> (d) <p id="logo">
36. 36.True or false: .menu is an id selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .red (b) #big (c) #top (d) #hero
38. 38.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <span> (c) <p class="big"> (d) <div class="big">
39. 39.🎯 Which element does the selector #hero style? (a) <h2 id="hero"> (b) <h2 id="top"> (c) <li class="note"> (d) <h2 class="hero">
40. 40.True or false: .card is a class selector. (a) True (b) False

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