CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 166 · 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 an id selector? (a) # (b) & (c) @ (d) .
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <span class="note"> (c) <div class="menu"> (d) <div class="star">
4. 4.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
5. 5.🎯 Which element does the selector #hero style? (a) <p class="menu"> (b) <span id="top"> (c) <span id="hero"> (d) <span class="hero">
6. 6.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
7. 7.🎯 Which CSS selector matches this element?
   <li class="red" id="main">Hello</li> (a) .box (b) li (c) #red (d) .main
8. 8.True or false: img is an id selector. (a) False (b) True
9. 9.True or false: p is a class selector. (a) False (b) True
10. 10.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <div class="big"> (c) <span class="box"> (d) <div id="big">
11. 11.True or false: .star is a class selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) li (b) #intro (c) #top (d) .top
13. 13.True or false: #top is an element selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) .end (b) #menu (c) li (d) .menu
15. 15.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) .hero (b) p (c) #top (d) .box
16. 16.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) .main (b) .box (c) .star (d) h1
17. 17.🎯 Which element does the selector .box style? (a) <span class="box"> (b) <p class="menu"> (c) <span id="box"> (d) <span class="star">
18. 18.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li class="box"> (c) <li id="box"> (d) <li class="star">
19. 19.True or false: #end is a class selector. (a) True (b) False
20. 20.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) .intro (b) #main (c) h2 (d) li
22. 22.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="big"> (c) <h2 class="note"> (d) <h2 id="note">
23. 23.🎯 Which element does the selector div style? (a) <p class="note"> (b) <h1 id="top"> (c) <span> (d) <div class="note">
24. 24.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
25. 25.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
26. 26.True or false: #main is an element selector. (a) True (b) False
27. 27.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h2 class="note"> (c) <h1 class="menu"> (d) <h1 id="star">
28. 28.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) #red (b) #end (c) .red (d) .box
29. 29.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
30. 30.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h2 class="box"> (c) <h1 id="main"> (d) <h1 id="intro">
31. 31.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) #logo (b) .logo (c) #end (d) #note
32. 32.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <p id="main"> (c) <h1 class="box"> (d) <p class="intro">
33. 33.True or false: .big is an element selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) .top (b) .red (c) #top (d) div
35. 35.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) li (b) #note (c) div (d) .main
36. 36.True or false: #top is an id selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) #top (b) #red (c) #hero (d) .hero
38. 38.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) p (b) #end (c) .star (d) .end
40. 40.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <h1 class="box"> (c) <p id="end"> (d) <p id="logo">

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