CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 72 · 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 sign starts a class selector? (a) @ (b) # (c) . (d) &
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="big" id="logo">Hello</h2> (a) .big (b) .red (c) #big (d) #end
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <p class="top"> (c) <p id="intro"> (d) <h1 class="red">
5. 5.True or false: #top is an element selector. (a) True (b) False
6. 6.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
7. 7.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="intro"> (c) <li id="main"> (d) <div class="big">
8. 8.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
9. 9.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) p (b) .red (c) span (d) #intro
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #note (b) h2 (c) .note (d) .logo
12. 12.True or false: .star is a class selector. (a) True (b) False
13. 13.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
14. 14.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) .note (b) #menu (c) #end (d) .menu
15. 15.True or false: body is an id selector. (a) False (b) True
16. 16.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
17. 17.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) .big (b) #big (c) div (d) .end
18. 18.🎯 Which element does the selector h1 style? (a) <li class="box"> (b) <div id="top"> (c) <h1 class="box"> (d) <h2>
19. 19.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) .end (b) #hero (c) #big (d) #end
20. 20.🎯 Which element does the selector h2 style? (a) <h2 class="box"> (b) <span id="hero"> (c) <div class="box"> (d) <li>
21. 21.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
22. 22.🎯 Which element does the selector #logo style? (a) <span class="big"> (b) <div class="logo"> (c) <div id="logo"> (d) <div id="end">
23. 23.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which element does the selector .menu style? (a) <h2 class="big"> (b) <h1 class="note"> (c) <h1 class="menu"> (d) <h1 id="menu">
25. 25.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) #box (b) .star (c) #end (d) h1
26. 26.True or false: .menu is a class selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #logo (b) #end (c) .star (d) div
28. 28.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) h2 (b) #note (c) .main (d) .big
30. 30.True or false: .card is an id selector. (a) True (b) False
31. 31.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
33. 33.🎯 Which element does the selector div style? (a) <p class="box"> (b) <div class="box"> (c) <span> (d) <h1 id="intro">
34. 34.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .intro (b) #box (c) span (d) div
35. 35.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .box (b) p (c) #intro (d) .star
37. 37.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
38. 38.True or false: .note is a class selector. (a) False (b) True
39. 39.True or false: p is an element selector. (a) True (b) False
40. 40.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <p class="big"> (c) <span class="menu"> (d) <span class="note">

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