CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 818 · 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.True or false: #end is an id selector. (a) True (b) False
3. 3.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
5. 5.🎯 Which CSS selector matches this element?
   <p class="star" id="top">Hello</p> (a) #top (b) .top (c) .menu (d) #intro
6. 6.🎯 Which CSS selector matches this element?
   <span class="star" id="main">Hello</span> (a) #logo (b) .main (c) .menu (d) .star
7. 7.🎯 Which element does the selector p style? (a) <h1> (b) <li id="hero"> (c) <h2 class="box"> (d) <p class="box">
8. 8.True or false: img is an element selector. (a) True (b) False
9. 9.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 id="red"> (c) <h2 class="box"> (d) <li class="star">
10. 10.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <div id="end"> (d) <h2>
11. 11.True or false: #logo is an id selector. (a) False (b) True
12. 12.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <li class="red"> (c) <h2 class="top"> (d) <h2 id="intro">
13. 13.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) h1 (b) #logo (c) .menu (d) .logo
14. 14.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) p (b) #top (c) span (d) .big
15. 15.🎯 Which element does the selector #hero style? (a) <h1 class="hero"> (b) <h2 class="note"> (c) <h1 id="top"> (d) <h1 id="hero">
16. 16.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) #end (b) #red (c) .box (d) .end
19. 19.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .big (b) #hero (c) #top (d) #note
21. 21.True or false: body is a class selector. (a) True (b) False
22. 22.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) #end (b) .red (c) .logo (d) #logo
23. 23.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
24. 24.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) #big (b) h1 (c) #logo (d) .logo
25. 25.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) h1 (b) #top (c) #intro (d) .big
26. 26.🎯 Which CSS selector matches this element?
    <div class="menu" id="logo">Hello</div> (a) .note (b) .logo (c) div (d) #end
27. 27.True or false: h1 is an element selector. (a) True (b) False
28. 28.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
29. 29.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #intro (b) .menu (c) .star (d) h1
32. 32.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
33. 33.True or false: img is an id selector. (a) False (b) True
34. 34.True or false: #hero is an element selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) li (b) .hero (c) #red (d) #hero
36. 36.True or false: .star is a class selector. (a) False (b) True
37. 37.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <span id="main"> (c) <li> (d) <div class="menu">
38. 38.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li class="star"> (c) <li class="menu"> (d) <li id="star">
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) #big (b) h1 (c) .red (d) #top
40. 40.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) #intro (b) .intro (c) .big (d) #note

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