CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 217 · 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?
   <h1 class="box" id="main">Hello</h1> (a) h2 (b) .box (c) .star (d) #logo
2. 2.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
3. 3.True or false: #top is an id selector. (a) True (b) False
4. 4.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
5. 5.🎯 Can many elements share the same class? (a) Yes (b) No
6. 6.🎯 Which CSS selector matches this element?
   <p class="menu" id="logo">Hello</p> (a) #menu (b) .logo (c) p (d) #end
7. 7.🎯 Which CSS selector matches this element?
   <li class="red" id="logo">Hello</li> (a) .logo (b) #logo (c) .box (d) #red
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="star" id="end">Hello</h2> (a) #hero (b) .star (c) #star (d) li
9. 9.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="red"> (c) <span class="red"> (d) <h2 id="end">
10. 10.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) #hero (b) span (c) #box (d) #end
11. 11.True or false: li is a class selector. (a) False (b) True
12. 12.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which element does the selector .red style? (a) <div class="star"> (b) <li id="red"> (c) <li class="box"> (d) <li class="red">
14. 14.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
15. 15.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
16. 16.True or false: #logo is an id selector. (a) False (b) True
17. 17.True or false: #top is an element selector. (a) False (b) True
18. 18.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <li class="box"> (c) <h2> (d) <div id="end">
19. 19.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) .end (b) #menu (c) #end (d) div
20. 20.True or false: .big is a class selector. (a) True (b) False
21. 21.True or false: .menu is an element selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) .box (b) h1 (c) p (d) #intro
23. 23.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) #big (b) h1 (c) #hero (d) .big
24. 24.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
26. 26.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
27. 27.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) .box (b) #top (c) #box (d) .star
28. 28.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #intro (b) #top (c) #menu (d) .top
29. 29.🎯 Which element does the selector #main style? (a) <span class="star"> (b) <div class="main"> (c) <div id="logo"> (d) <div id="main">
30. 30.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #main (b) .note (c) .intro (d) #note
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #note (b) .main (c) li (d) h2
32. 32.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <li id="note"> (c) <li class="big"> (d) <div class="red">
34. 34.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <p class="menu"> (c) <span id="box"> (d) <span class="box">
35. 35.True or false: #hero is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) div (b) #box (c) .top (d) li
37. 37.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) div (b) .top (c) #intro (d) span
38. 38.🎯 Which element does the selector p style? (a) <h1> (b) <p class="menu"> (c) <li id="intro"> (d) <h2 class="menu">
39. 39.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h1 id="star"> (c) <h2 class="note"> (d) <h1 class="menu">
40. 40.🎯 Which element does the selector .big style? (a) <h2 class="red"> (b) <h2 id="big"> (c) <li class="box"> (d) <h2 class="big">

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