CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 378 · 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.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
3. 3.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h1 class="star"> (c) <h2> (d) <li class="star">
4. 4.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="menu"> (c) <li class="star"> (d) <div class="note">
6. 6.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <div class="box"> (c) <h2 class="box"> (d) <li>
7. 7.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
8. 8.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
9. 9.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 class="red"> (c) <h1 class="box"> (d) <h1 id="red">
11. 11.🎯 Which element does the selector h1 style? (a) <li class="box"> (b) <div id="intro"> (c) <h1 class="box"> (d) <h2>
12. 12.True or false: #main is an element selector. (a) True (b) False
13. 13.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <h1> (c) <p class="red"> (d) <li id="intro">
14. 14.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #box (b) #main (c) #intro (d) .intro
16. 16.True or false: .card is an id selector. (a) False (b) True
17. 17.True or false: p is an element selector. (a) True (b) False
18. 18.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="end"> (c) <h2 class="red"> (d) <div class="red">
19. 19.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) p (b) #menu (c) .note (d) span
21. 21.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) div (b) span (c) #end (d) .logo
22. 22.True or false: li is an element selector. (a) False (b) True
23. 23.🎯 Which element does the selector span style? (a) <h1 class="note"> (b) <p> (c) <h2 id="hero"> (d) <span class="note">
24. 24.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #end (b) .note (c) #note (d) .logo
25. 25.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) #intro (b) #main (c) .note (d) .intro
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .intro (b) #main (c) #intro (d) .big
27. 27.True or false: .star is an id selector. (a) False (b) True
28. 28.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <span id="main"> (c) <li> (d) <h2 class="big">
29. 29.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) .end (b) .menu (c) #end (d) #hero
30. 30.True or false: p is an id selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) p (b) .intro (c) span (d) #note
32. 32.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .main (b) #star (c) .star (d) .menu
33. 33.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
34. 34.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) .big (b) .note (c) #main (d) #note
35. 35.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) #top (b) #intro (c) div (d) #box
36. 36.True or false: .card is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) div (b) #box (c) .star (d) li
38. 38.🎯 Can many elements share the same class? (a) No (b) Yes
39. 39.True or false: #hero is an id selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #logo (b) div (c) li (d) .main

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